3.　　　 It’s quite difficult to find who’s responsible of pollution.

2.　　　 The police is investigating (调查)　 the cause of the accident.

1.　　　 How to do with this problem is really a problem we have to discuss.

10.　 Much of pollution has caused serious d________ to our environment.

9.　　　 This film r ________　 him of what he had seen in Paris.

8.　　　 The pilot of the plane is r __________ for the passengers’ safety.

7.　　　 Blind men have to c _________ with each other by gesture.

6.　　　 At the meeting the secretary p________ (呈现 ， 提出) the project to the committee.

5.　　　 Dolphins are always of great　 i_______(智商)　 so that children like to play with them.

4.　　　 How we can ___________(处理) with this problem remains to be discussed.