—Listen! There is a knock on the door．Who _____ it be?—It must be Jack．Just now I sent for him．
#87583
A
shall
B
can
C
must
D
might
推荐题目
— The woman biologist stayed in Africa studying wild animals for 13 years before she returned. — Oh, dear ! She ______ a lot of difficulties !
#90563
A
may go through
B
might go through
C
ought to have gone through
D
must have gone through
--What can I do for you?-- If you __________ see Mr. Smith, give him my regards.
#86754
A
will
B
would
C
shall
D
should
. Mary _____ be in London because I saw her in town just now.
#88099
A
mustn’t
B
isn’t able to
C
needn’t
D
can’t
Grace doesn’t want to move to New York because she thinks if she there, she wouldn’t be able to see her parents very often.
#86430
A
lives
B
would live
C
has lived
D
were to live
The fire spread through the hotel very quickly but everyone______get out.
#90547
A
had to
B
would
C
was able to
D
could