It’s nearly 7 o’clock. Helen _______ come, but let’s wait for her for another 5 to 7 minutes.
#88061
A
couldn’t
B
can’t
C
mustn’t
D
may not
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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