EXERCISES I Complete the sentences with the verbs in parentheses If it (freeze)freezed tonight, the roads (be) would be very slippery tomorrow You’d better take the day off if you (not feel) did not feel well If the solar constant had changed, life on earth (cease).would have ceased If he (not be ) had not were in a hurry, he would have been late for class He would get good marks if he (prepare )prepared his homework carefully If you don’t work hard, you (fail)will fail in our exam If she had time, she (go)would go to the library If you (call) called on me, I would be glad to meet you You (be) are healthy if you get up early 10 If we had started half an hour later yesterday morning, we (miss)would have missed the first train 11 If you (see) see Linda, tell her I have a message for her 12 You might fall if you (be) were not careful e II Rewrite the following sentences : She didn’t take your advice, so she failed in the exam /If she had taked your advice, she would not have failed in the exam He didn’t hurry, so he missed the train If he had done hurry, he would not have missed the train _ Unless you water those flowers regularly, they will wither If you are not_water those flowers regularly, they will wither If you want my advice, you should forget about buying a new house If I He won’t visit me again I wish _ It’s a pity I didn’t meet you at the banquet last night I wish _ The environment will get polluted unless we have progammes to protect it If _we not programmes to protect it, the environment will get polluted _ We could not breath without the earth’s atmosphere If _they are not the earth’s atmosphere , we could not breath _ Unless Tom takes his library book back tomorrow he will have to pay a fine If_Tom does not takes his library book back tomorrow he will have to pay a fine 10 You can’t visit the United States if you don’t get a visa Unless you get a vía you can’t visit the united stares _ 11 People drive very fast That’s why there are so many accidents 12 I think you should tell the police about the accident you saw yesterday morning If I don’t saw yesterday morning I _ 13 Unless someone has a key, we can’t get into the house We can only get 14 She is very shy, that’s why she doesn’t enjoy parties If she is not shy that’s why she would enjoy parties _ 15 If he had known your telephone, he would have rung you Had he _ 16 I wouldn’t have become a teacher if I hadn’t had such a good English teacher Had I _ 17 If I should need more help, I could call my neighbor Should I _ 18 If her condition should improve, we’ll inform you immediately Should 19 If you were able to go abroad for the summer, where would you go? Were _ 20.The world would be much better off if all environment pollution stopped today Were _ ... you Had he _ 16 I wouldn’t have become a teacher if I hadn’t had such a good English teacher Had I _ 17 If I should need more help, I could call my neighbor