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
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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
Sharon was supposed to be here at 10 o'clock. She ___ about our meeting.
A. would have forgotten
B. should have forgotten
C. ought to have forgotten
D. must have forgotten
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