He looked as if he ???_____ the answer.
A.knew B. had known C. knows D. has known
Whatever do you consider ___________ to her?
A. happened B. happening C. to happen D. happens
_____many times, he finally understood it.
A. To be told B. Telling C. Having told D. Having been told
—Dad! Tom's broken a glass!
— ________. Accidents will happen.
A. No way B. Doesn't matter C. No trouble at all D. Don't mention it
—What will you do during winter vacation?
—I don’t know，but it’s about time something·
A．I decided B．I’ll decide C．I’d decided D．I’m deciding
Tom has been preparing carefully for the English examination, so that he can be sure of passing it at his first __.
A. request B. attempt C. promise D. purpose
some people regard as a drawback is seen as a plus by many others.
A. Whether B. What C. That D. How
Was it the park ______ you met Tom yesterday?
A. that B. where C. which D. what
Elephants have their own way to tell the shape of an object and ________ it is rough or smooth.
A. / B. whether C. how D. what (天津 2005)
His failure in the experiment suggested that he ________ his teacher’s proper instructions. A. should not have followed
B. should not follow C. mustn’t have followed
D. hadn’t followed