题目内容：

用括号里所给动词的适当形式填空。注意：每空不限一词。

1.My grandfather is a farmer and he isn’t used to ___________(live) in the city.

2.When the fans saw their favourite pop star, they couldn’t stop ____________(scream).

3.–You car looks cool. When ________ you ________(buy) it?    --Last week.

4.I____________(not hear) from my brother for a long time.

5.It’s dangerous ____________(climb) Mount Huang on cold and snowy days.

6.I think this film is the best one I ____________(see) before.