题目内容
单句改错
It is good manners to wait in a line. ________________
It is good manners for an Arab to stand closely to his friend when they are talking.
__________________________________________________________________
It is a common practice for people to study all their lives．
_________________________
It is possible to rain tonight．
It is very late．We’d better find a room to live．
It is very difficult for us finishing so much work in so little time．
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