He________sleep，although he tried to，when he got on such a hunt for an idea until he had caught it.
#62298
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t
推荐题目
I don’t know what happened to my pet. It just ________ eat whatever I feed her.
#62854
A
don’t
B
won’t
C
can’t
D
couldn’t
—______ you please tell me something about the life in Canada? — Sorry, I______ . I don’t know either. I’m from Australia.
#76590
A
Could, couldn’t
B
Can; couldn’t
C
Could, can’t
D
Can, mustn’t
---Good morning. I’ve got an appointment with Mr Smith in his office. ---Morning. You ________ be Mr Jones. This way, please.
#75242
A
can
B
must
C
should
D
may
—Why does Mary look so worried today?—I’m not sure, but she _____ a small accident driving here.
#62738
A
must have
B
might have
C
must have had
D
might have had
If you want somebody to go window shopping with you, why not try calling Marie? —she ________ be home by now.
#62324
A
shall
B
should
C
will
D
would