My most devoted friend, Professor Yang, _______ often go hiking when he lived in the mountain that was covered with forest.
#87639
A
would
B
should
C
could
D
might
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The light is out in her room. She ___ to bed.
#88959
A
can’t go
B
can’t have gone
C
must have gone
D
has gone
—Is the letter from your mother?—Yes. But she ________ the letter herself, because she doesn't even know one word.
#86535
A
needn't have written
B
can't have written
C
might not have written
D
should not have written
I can’t find the recorder in the room. It ________ by someone.
#87740
A
may take
B
may have been taken away
C
must have taken away
D
needn’t have been taken away