I ________ asleep because it took me a long time to realize that the telephone was ringing.                                    
#87573
A
could fall
B
need have fallen
C
must have fallen  
D
may fall
推荐题目
Thank you for all your hard work last week.I don’t think we ______ it without you. 
#90551
A
can manage
B
could have managed
C
could managed
D
can have managed
The new CEO asked that all inter-office communications ______ in writing rather than in person, ______ possible.
#87220
A
have been made; whoever
B
would be made; whichever
C
be made; whenever
D
were made; whatever
Captain Cook commanded that all the goods _________ into the sea.
#87638
A
should throw
B
be thrown
C
threw
D
should thrown