--“Where is Tom?”--“He hasn’t come to school today, I think he ______be ill.”
#75870
A
has to
B
should
C
may
D
can
推荐题目
I told Sally how to get here, but perhaps I ___ for her.
#63323
A
had to write it out
B
must have written it out
C
should have written it out
D
ought to write it out
I use a clock to wake me up because at six o'clock each morning the train comes by my house.
#63505
A
couldn't
B
mustn't
C
shouldn't
D
needn't
Mary _______ her mother with the housework, but she didn’t.
#63072
A
must have helped
B
ought to have helped
C
must help
D
should help
—Why did you leave without a word of warning to John?—But what _____ otherwise? He never listens to me.
#63135
A
could I have done
B
would I do
C
must I have done
D
should I do
—What do you think people can do for their aged parents?—They_________ do anything except to be with them and be themselves.
#75775
A
don’t have to
B
oughtn’t to
C
mustn’t
D
can’t