——You didn’t wait for Mr. Black last night, did you?——No, but we ____. He didn’t return home at all.
#89422
A
couldn’t have
B
needn’t have
C
didn’t need to
D
should wait have
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—Why am I so slow at doing the cloze test?—I guess you didn’t realize the use _____ the contexts.
#90170
A
you should have made of
B
you must have made from
C
of which you could have from
D
out of which you need make
But for your timely help, I ________ the project as scheduled.
#87395
A
couldn’t complete
B
couldn’t have finished
C
can’t have finished
D
can’t finish
Look at the trouble I am in! If only I ______ your advice.
#86926
A
followed
B
would follow
C
had followed
D
should follow
 – Mary was crying sadly.  -- Oh, she ________ the bad news that her mother was badly injured in the accident.
#87842
A
must know
B
might have known
C
must have known
D
should have known