He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
#62950
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t
推荐题目
I am fond of my sister but she has one serious shortcoming. She _________ be really stubborn.
#63474
A
can
B
may
C
must
D
shall
Which pair contains the sound／／?
#77335
A
other；thank
B
Thursday；strength
C
thin；this
D
brother；healthy
---Must I answer it in English?---No, you _______. You can use Chinese.
#76005
A
shouldn’t
B
can’t
C
mustn’t
D
needn’t
Tom ____his homework yesterday, because he was in hospital all day.
#63327
A
can’t finish
B
couldn’t finish
C
couldn’t have finished
D
mustn’t finish