Jim was not _______ to the club, because at that time he was not a member of it.
Shy people often avoid situations _____would force them into close contact with other people.
-----How long do you think it will be _____man can finally solve the problem of cancer?------Well.it depends.
I listened to a report about the Diaoyu Island Dispute last weekend and that was the first time I about the subject.
--------Is it all right if I smoke here?------- _______,sir.This is a non-smoking section.
If we sit near ______ front of the bus,we will have ________ better view.