I. Choose the letter A, B, C or D to complete the sentences with given words If/ people/ breath/ contaminate/ air, they/ have/ breathing problems A. If people breathed contaminated air, they had breathing problems. B. If people breathed contaminated air, they would have breathing problems. C. If people breath contaminated air, they have breathing problems. D. If people breath contaminated air, they will have breathing problems. 2: Many/ people/ this area/ have/ cholera/ because/ they/ drink/ untreat/ water. A. Many people in this area have cholera because they drink untreated water. B. Many people on this area have cholera because they drink untreated water. C. Many people on this area have cholera because they drink untreating water. D. Many people in this area have cholera because they drink untreating water. 3: The street/ not/ look/ attractive/ because/ there/ be/ a lot of/ rubbish. A. The street not look attractive because there’s a lot of rubbish. B. The street not look attractive because there’re a lot of rubbish. C. The street doesn’t look attractive because there’s a lot of rubbish. D. The street don’t look attractive because there’re a lot of rubbish. 4:A lot of/ people/ be/ injured/ the/ earthquake. A. A lot of people were injured in the earthquake. B. A lot of people were injured on the earthquake. C. A lot of people were injured at the earthquake. D. A lot of people were injured for the earthquake. 5. I/ look forward to/ hear/ you/ soon. A. I am looking forward to hearing from you soon. B. I am looking forward to hear from you soon. C. So am I looking forward to hear from you soon. D. I look forward to hear from you soon. 6. Tsunamis/ also/ refer/ the public/ tidal waves. A. Tsunamis also referred to the public as tidal waves. B. Tsunamis also refer to the public as tidal waves. C. Tsunamis is also referred as the public as tidal waves. D. Tsunamis are also referred to the public as tidal waves. 7.If/ people/ breath/ contaminate/ air, they/ have/ breathing problems A. If people breathed contaminated air, they had breathing problems. B. If people breathed contaminated air, they would have breathing problems. C. If people breath contaminated air, they have breathing problems. D. If people breath contaminated air, they will have breathing problems. 8.We/ to/ called/ take/ ambulance/ to/ the/ the/ injured/ hospital/ the. A. We called the ambulance to take the injured to the hospital. B. We called the ambulance take to the injured to the hospital. C. We called the ambulance to take injured the to the hospital. D. We called the ambulance take to injured the to the hospital