—Sorry, Mr. Wang. I didn’t finish the assignment yesterday. Oh, you ________ have done it as yesterday was the deadline.
#87465
A
must
B
mustn’t
C
should
D
shouldn’t
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—I didn’t know your telephone number in Paris; otherwise, I ______ you.—Oh, I would rather you ______ me.
#86764
A
would have called; had called
B
would ring; call
C
would have called; called
D
would ring; had called
They demanded that the books ______ to the school library right away.  
#87511
A
should return
B
be returned
C
were returned
D
returned
I _________ you, but I was busy all the time yesterday afternoon.
#89611
A
could help
B
had helped
C
helped
D
could have helped