I would have come earlier, but I ________ that you were waiting for me. 
#89381
A
didn’t know
B
hadn’t know
C
would have known
D
haven’t known
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It’s high time we_______ to the theater. 
#89949
A
will
B
shall
C
are going to
D
went
 We      the postcards yesterday, but it didn’t arrive.
#87363
A
should receive
B
ought to receive
C
ought to have received
D
must have received
—Any information about your son?—No. If only I ______ those tough words to him.
#90532
A
didn't say
B
hadn't said
C
shouldn't have said
D
couldn't have said