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.

患者投照根尖片所显示的牙齿邻面影像相互重叠的原因是（）

A.X线与被检查牙齿的长轴不垂直

B.X线与被检查牙齿的长轴不平行

C.X线与被检查牙齿的邻面不平行

D.X线与被检查牙齿的邻面不垂直

E.正常现象