Hoàn thành câu: My dog/ always bark/ if/ hear/ strange sound. 2. She/ be late/ work/ because/ miss/ bus1. My dog/ always bark/ if/ hear/ strange sound. 2. She/ be late/ work/ because/ miss/ bus. 3. She/ not work/ hard/ because/ be/ old. 4. If/ homework/ not be/ long and difficult/ I/ finish/ on time. 5. She/ not read/ books/ because/ not have/ enough time. 6. We/ not go/ a walk/ because/ it/ rain/ heavy. 7. If/ people/ stop/ use dynamite/ fishing/ sea creatures/ be well preserved. Write correct sentences to make a complete letter: 1. I/ write/ you/ bad situation/ affect/ lake/ school. 2. As you know/ late/ school/ be beautiful. 3. However/ it/ become/ polluted. 4. People/ electricity/ fish. 5. A lot/ fish/ die/ float/ water surface. Conplete the sentences with an appropriate form of the words in parentheses : 1. The air in the city is very .........( pollute) 2. Please listen to the lecture ...........( care ) 3. The accident happened because of driving ........( care) 4. He is going to ......... all the bags.( collection ) 5. She has ............. provided a picnic lunch for us.( kind) 6. We'll make this beach clean and .......... again.( beauty) 7. If the .......... continues, what will happen? ( pollute) 8. He was ........... that they were not coming.( disappoint) 9. Air and water ......... can make people fall ill.( pollute) 10. A large number of inhabitants have made ............. on how to protect the environment. ( suggest) |