It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
#62254
A
couldn’t
B
may
C
should
D
needn’t
推荐题目
You ________ be hungry already — you had lunch only two hours ago!
#63107
A
wouldn’t
B
can’t
C
mustn’t
D
needn’t
It was dark when Mary went out. I wonder how she ______ through the black lane by herself.
#63439
A
dared not to go
B
dare going
C
not dare go
D
dared to go
--______ you leave now?---Yes, because I’m meeting my aunt at 7:00 this evening.
#75555
A
Can
B
May
C
Need
D
Must
________ you happen to see Mary, would you please ask her to come here?
#63165
A
Would
B
Could
C
Should
D
Might