... He is dangerous !a. let / go b. let / to go c. allow / go d. allow / going2 FIRST - TERM TEST REVIEW (ENGLISH 11) Content :1/ Pronunciation + Stress2/ Vocabulary Unit 1 Unit 73/ Writing ... tenses_ Verb forms : To-infinitive (To-V), bare infinitive (Vo), Gerund (V-ing), Passive infinitive (to be V3/ed), passive gerund (V-ing V3/ed), present participle (V-ing), perfect gerund ... water in many parts of the world today.a. drainage b. loss c. decrease d. shortageIII. WRITING : Review _ the structure of formal and informal letters. _ sentence structures in letters._ sentence...