七、补全对话。
A: Hi, Mario. 1.?
B: I went to Boston with my parents. You know I like cities that have beautiful beaches and blue skies. I prefer swimming in the sea to staying at home.
A: 2.?
B: It was terrible. I had an unpleasant vacation there.
A: 3.?
B: When we got there, we found that there was too much rubbish. The beaches were full of plastic bags and bottles.
A: I'm sorry to hear that. I think we should do something to solve the problems.
B: 4..
A: Good idea! But we don't know how to write it.
B: 5..
A: Yeah, she is always helpful. I think she will help us.

1. Where did you go on vacation / What did you do last summer / ... 2. How was your vacation (there) / What did you think of your vacation / ... 3. What happened / What was wrong / ... 4. We can write a letter to the government about this problem / Let's write a letter to the local newspaper / ... 5. We can ask Ms. Green for help / Maybe Mrs. Smith would like to help us / ...

一、用括号内所给词的正确形式填空。
1. (science) research is very important in hospitals.
2. Humans are supposed to save (endanger) animals.
3. We had better use (reuse) bags instead of plastic bags.
4. I think we need more (law) to stop pollution.
5. These measures are strongly supported by (environment) groups.

1. Scientific 2. endangered 3. reusable 4. laws 5. environmental

二、从方框中选择适当的词或短语并用其正确形式填空。
| industry | cruel | afford | be harmful to | at the top of |
1. I like animals and I can't stand people who are to animals.
2. Everything looked amazing and beautiful the mountain.
3. In recent years, the number of wild animals is getting smaller and smaller. This our ecosystem.
4. Soon they couldn't to buy food for themselves.
5. The tourism has been greatly influenced by the development of information and communication technologies.

1. cruel 2. at the top of 3. is harmful to 4. afford 5. industry