---Are you content with her lecture? ----Far from that. It _______.
#63457
A
may have been good
B
couldn’t have been worse
C
can’t be better
D
must be better
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A hot balloon blew up in Egypt. There ________ something wrong with the quality of it.
#62333
A
may have been
B
must be
C
need have been
D
might be
—Jack is not in the office at the moment—Oh, he ______ those who are going to take the driving test in an hour.
#62546
A
can have instructed
B
must have instructed
C
must be instructing
D
will be instructing
We were looking for you all this morning. You    office without a word.
#62458
A
mustn’t have left
B
shouldn’t have left
C
couldn’t have left
D
needn’t have left