It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
#62254
A
couldn’t
B
may
C
should
D
needn’t
推荐题目
There's only one day to go. You _____ finish your schoolwork by tomorrow.
#75440
A
can
B
will
C
must
D
may
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
---Be quiet! Mr Smith is coming. --- Don’t worry. It__________be him. Mr Smith is much taller.
#74432
A
mustn’t
B
must
C
can’t
D
needn’t
Had the US Airways captain not guided his jet to a safe landing on the Hudson River, just west of New York, over 100 people aboard ______, along with many more on the ground.
#62916
A
might have died
B
needn’t have died
C
must die
D
shouldn’t die