—Who’s that boy reading in the study ? Is it David?—It __________ be David. I saw him go home just now.
#74950
A
must
B
can’t
C
may
D
shouldn’t
推荐题目
Food safety is important. Rules____ to stop people from food pollution.
#75769
A
must make
B
must be made
C
can’t make
D
can’t be made
You can not imagine that a well-behaved gentleman _______be so rude to a lady.
#63350
A
might
B
need
C
should
D
would
I was really anxious about you. You______ home without a word.
#63295
A
mustn’t leave
B
shouldn’t have left
C
couldn’t have left
D
needn’t leave
— Can I go to the movie, Mum?— Certainly. But you _______ be back by ten o’clock.
#76644
A
can
B
may
C
might
D
must