ex2: combine each pair of sentences to make a conditional sentence type 1 1 students are more aware of protecting the environment. Teachers teach environmental issues at school 2 ligh pollution happens. Animals change thier behaviour patterns 3 The levels of radioactive pollution decrease. We switch from nuclear power to renewable enrgy sources 4 the water temperature in creases. some apuaticcreatures are unable to reproduce 5 people get more diseases. The water is contaminted ex4: put the verbs in brackets into the correct from 1 If you (be) _________ the presidentm what _____________ you (do) ________________(to) help the environment? 2 They get sick so often. If they (exercise) ______ more ,they (be)____ healthier 3 If I (have)____________ one million US dollars, I (build) _________ more parks in our city 4 Ngoc's mother is unhappy. If ngoc (tidy) _______ her room every day , her mother (not be)___ so upset 5 There ins't a graden at our house. If there (be) _________, We (grow) _______vegetables.