4.　　　 Li Ming pretended _____ ( do ) his homework when his father came back.

3.　　　 He spent as much time as he could _________ ( translate ) that book into English.

2.　　　 The girl lay in bed ________ ( read ) her favourite novel.

1.　　　 We don’t allow _________ ( smoke ) in our school, you know.

10. Can you think of the _______________(情形) where this idiom is used?

9．It is _______________(可笑的) of you to make such a mistake.

8．It includes more _______________(监督) to control how many trees are cut down and how many fish boats can catch.

7．Greedy businessmen hide from their r____________ to the environment and only think about money.

6．The white-flag dolphins depend on the Yangtze River for _______________(生存).

5．In the police station, the man _______________(发誓) that his story was true.