“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
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I was too busy at that time, ________ I would have given you a hand.
#88975
A
even though
B
so
C
otherwise
D
nevertheless
I paid a fine of 200yuan for speeding. If only I _________ the traffic rules!
#87126
A
had respected
B
respected
C
would have respected
D
could respect
________ your letter, I would have started off two days ago.
#87250
A
If I received
B
Should I receive
C
If I could have received
D
Had I received