I’ve taken someone else’s green sweater by mistakes. It ______ Harry’s. He always wears green..
#87491
A
could be
B
will be
C
mustn’t be
D
has to be
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“I know she was in because I heard her radio, but she didn’t open the door.” “She___the bell.” 
#88102
A
may not be hearing
B
may not have heard
C
must not have heard
D
must not be hearing
He said that he would write to us but so far we ___________ from him.
#87738
A
didn’t hear
B
haven’t heard
C
shouldn’t have heard
D
hadn’t heard
The flight was put off due to the typhoon. Otherwise, we______ the beautiful scenery in Greece now.
#87252
A
would be enjoying
B
would have enjoyed
C
will enjoy
D
must have enjoyed