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
—Mary’s score on the test is the highest in her class.—Really? She have studied very hard.
#87447
A
may
B
ought to
C
must
D
should
---The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job? ---____ my students have a try?
#87077
A
May
B
Must
C
Will
D
Shall
Premier Wen advocated school bus safety_______.
#87525
A
be guaranteed
B
guaranteeing
C
should guarantee
D
must be guaranteed
He insisted that the book _______ to the school library at once.
#88003
A
return
B
should return
C
be returned
D
would be returned