用括号里所给动词的适当形式填空。注意：每空不限一词。
小题1:My grandfather is a farmer and he isn’t used to ___________(live) in the city.
小题2:When the fans saw their favourite pop star, they couldn’t stop ____________(scream).
小题3:–You car looks cool. When ________ you ________(buy) it? --Last week.
小题4:I____________(not hear) from my brother for a long time.
小题5:It’s dangerous ____________(climb) Mount Huang on cold and snowy days.
小题6:I think this film is the best one I ____________(see) before.
