While watching television, __________.
#90451
A
the doorbell rang
B
the doorbell rings
C
we heard the doorbell ring
D
we heard the doorbell rings
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He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.
#90507
A
should
B
must
C
wouldn’t
D
can’t
The light is still on. They ___ to turn it off when they left the room.
#87772
A
must forget
B
could have forgotten
C
may forget
D
must have forgotten
(2013·山西高三诊断)Honey, you ________ alcohol for they have stopped drinking.
#86569
A
may not have bought
B
mustn't have bought
C
can't have bought
D
needn't have bought