It's high time someone ___ him to stop behaving like a child.
A. will tell
B. told
C. tell
D. should tell
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My cat would not have bitten the toy fish, ___ it was made of rubber.
A. if she has known
B. she should have known
C. if she knew
D. had she known
I ____ provided you with the money. Why didn't you ask me ?
A.could have
B.had
C.must have
D.ought to have
Peter has just arrived, but he talks as if he ___ everything here.
A. will know
B. has know
C. knew
D. know
It is strange that such a thing ___ in your university.
A. will happen
B. happens
C. happened
D. should happen
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