PRACTICE EXERCISE Choose the best answer. 1. Mary didn’t wear the raincoat, so she got cold. A. if Mary wore the raincoat, she wouldn’t get a cold. B. If Mary had won the raincoat , she didn’t et a cold. C. If Mary had won the raincoat , she wouldn’t have got a cold. D. If Mary has worn the raincoat , she wouldn’t have got a cold. 2. She stepped back and didn’t say a word. A. She stepped back when didn’t say a word. B. She stepped back until didn’t say a word. C. She stepped back without saying a word. D. She stepped back before she said a word. 3. My sister didn't leave the car key, so I couldn't pick her up at the airport. A. If my sister left the car key, I would pick her up at the airport. B. If my sister had left the car key, I could pick her up at the airport. C. If my sister had left the car key, I would have picked her up at the airport. D. If my sister have left the car key, I would have picked her up at the airport. 4. He is riding a bus because he missed the last train. A. If he hadn't missed the last train, he wouldn't be riding a bus. B. If he hadn't missed the last train, he wouldn't have been riding a bus. C. If he didn't miss the last train, he wouldn't ride a bus. D. If he didn't miss the last train, he wouldn't be riding a bus. 5. Without this treatment, that patient would have died. A. If that patient didn't followed this treatment he would have died. B. If that patient hadn’t undergone this treatment he would have not died. C. If that patient had use this treatment he would have not died. D. If that patient haven’t undergone this treatment he would have not died. 6. Without your help, I couldn't have finished it on time. A. I couldn't finish it on time because you helped me. B. I couldn't finish it on time though you helped me C. I could finish it on time because you helped me. D. You helped me finishing it on time. 7. They didn't follow the map so they got lost. A. They wouldn't get loss unless they had followed the map. B. If they had followed the map, they wouldn't have got lost. C. If they followed the map, they wouldn't get lost. D. They wouldn't have got lost unless they followed the map. 8. We won't get what we want if we don't unite. A. If we don't unite, we will get what we want. B. We won't get what we want if we unite. C. If we get what we want, we will unite. D. We won't get what we want unless we unite. 9. If they rise higher, they'll fall harder. A. The higher they rise, the more harder they'll fall. B. They fall harder because they rise high. C. The higher they rise, the harder they'll fall. D. They rise the higher, they'll fall the harder. 10. The only way to defend ourselves is vigilance (thận trọng). A. We defend ourselves by being vigilance. B. If we want to defend ourselves, vigilance is not necessary. C. But for vigilance, we can't defend ourselves. D. Vigilance is not the only way to defend ourselves. 11. Because the street was crowded with people, I couldn’t drive fast. A.If the street weren’t crowded with people, I could drive fast. B.If the street hadn’t been crowded with people , I could have driven fast. C.If the street were crowded with people, I couldn’t drive fast. D.If the street had been crowded with people , I couldn’t have driven fast. 12. She was tired, so she didn’t enjoy the party. A.If she were tired, she wouldn’t enjoy the party. B.If she weren’t tired, she would enjoy the party. C.If she had been tired, she wouldn’t have enjoyed the party. D.If she hadn’t been tired, she would have enjoyed the party. 13. Provide / your handwriting / legible / test scorer / accept / your answer. A. providing with your legible handwriting, every test scorer must accept your answer. B. providing your handwriting is legible, the test scorer does not accept your answer. C. provided for your legible handwriting, the test scorer has to accept your answer. D. provided that your handwriting is legible, your answer will be accepted by any test scorer. 14. Had I known more about computer programming, I would have worked for a computer company. A. I didn’t know much about computer programming so I didn’t work for a computer company. B. A better knowledge of computer programming will help me find a job in a computer company. C. I wish I knew more about computer programming and could work for a computer company. D. Knowing more about computer programming, I would find a job in a computer company. 15. You got lost because you didn’t do what I told you. A. If you followed what I told you, you wouldn’t get lost. B. If you had followed my instructions, you wouldn’t have got lost. C. Unless you do what I told you, you will get lost. D. You didn’t get lost because you did what I told you. 16. If you / not rescued / boy, he would / drowned. A. If you had not rescued the boy, he would have been drowned. B. If you don't rescue the boy, he would have drowned. C. If you don't rescuse the boy, he will be drowned. D. If you had not rescued the boy, he would have drowned. 17. If farmers use / hybrid seeds, they would / larger crops. A. If farmers used hybrid seeds, they would have larger crops. B. If farmers used hybrid seeds, they will have larger crops. C. If farmers use hybrid seeds, they would have larger crops. D. If farmers had used hybrid seeds, they would have larger crops. 18. He / wish / watch / football match / last night. A. He wished he had watched a football match last night. B. he wished he had watched the football match last night C. he wished he watched the football match last night. D. He wished watching the football match last night. 19. Maria says she'd like to have been put in a higher class. A. Maria wishes she will be put in a higher class. B. Maria wishes that she had been put in a higher class. C. Maria wishes she is put in a higher class. D. Maria wishes she were put in a higher class. 20. I'd love to be in a secluded beach in Mexico. A. I wish I would be in a secluded beach in Mexico. B. I always want to be in a secluded beach in Mexico. C. I wish I could be in a secluded beach in Mexico. D. I wish I was in a secluded beach in Mexico 21. he / come / if / station / earlier / train / he / miss. A. If he had come to the station earlier he would not have missed the train. B. If he have come to the station earlier he would not have missed the train. C. If he had came to the station earlier he would not have missed the train. D. If' he had come to the station earlier he would have not missed the train. 22. If only I had not seen her. A. I wish I had seen her B. I wish I had not seen her C. I have not seen her for ages D. She wishes she had come to see me 23. I’m sorry that he won’t accept the job he’s been offered. A. I wish he would accept the job he’s been offered B. I wish he had accept the job he’s been offered C. I wish he would have accepted the job he’s been offered D. I wish he will accept the job he’s been offered 24. He kept it only because nobody else had wanted it. A. He would have kept it if nobody else had wanted it B. He would have kept it if anybody else wanted it C. He wouldn’t have kept it if anybody else wanted it D. He wouldn’t have kept it if anybody else had wanted it. 25. You may get cold on the way so take the coat. A. To take the coat you will get cold on the way. B. In case you’re cold on the way, you should take a coat. C. If you didn’t take a coat, you’d be cold on the way. D. Only if you get cold can you take the coat. II. Identify the error 1. If I lived during the 17 th century, I could have known Sir Isaac Newton. A B C D 2. If you examine this glass careful enough, you will see many cracks. 3. If I were in your position, I would have changed the job. A B C D 4. We could have saved more time if we took the plane. A B C D 5. Had Jack not been honest, he would have returned the money. A B C D 6. I’ll be at the cinema on time unless I’ll have to work overtime. A B C D 7. Had you been careless, You wouldn’ t have had an accident. A B C D 8. Were our train arrived punctually, we should have time to visit your sister. A B C D 9. If I were to know they were honest, I’d gladly lend them the money. A B C D 10. If it hadn’t rain yesterday, I would have come to see you. A B C D 11. If we have known the news, we would have told you. A B C D 12. If we were serious about pollution, we spent more money on research. A B C D 13. They would be glad unless the rain stopped soon. A B C D 14. Tom would feel better if he takes the medicine. A B C D 15. We would be making a profit if all will go according to the plan. A B C . fall harder. A. The higher they rise, the more harder they'll fall. B. They fall harder because they rise high. C. The higher they rise, the harder they'll. always want to be in a secluded beach in Mexico. C. I wish I could be in a secluded beach in Mexico. D. I wish I was in a secluded beach in Mexico 21. he