The problem is too difficult for him. He _______ solve it by himself without any help.
#76048
A
can't
B
mustn't
C
shouldn't
D
needn't
推荐题目
I’m fond of my sister, but she has a serious shortcoming. She _______ be really stubborn.
#63569
A
must
B
will
C
can
D
should
We _______ the difficulty together, but why didn’t you tell me?
#62911
A
should face
B
might face
C
could have faced
D
may have faced
—Can we run across the road now?—No, we _ . We have to wait until the light turns green.
#75388
A
needn't
B
mustn't
C
couldn't
D
shouldn't
You _________ drive so fast, for we have enough time to arrive at the station.
#74224
A
can't
B
mustn't
C
needn't
D
shouldn't
Li Lei can’t go hiking with us today,because he take care of his sick mother.
#75980
A
has to
B
may
C
mustn’t
D
needn’t