The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them.
#90173
A
shan’t
B
can’t
C
needn’t
D
mustn’t
推荐题目
----Look,Mr.Hu is on the other side of the street. ----It____ be him.He has gone to Lanzhou.
#87934
A
mustn’t
B
can’t
C
wouldn’t
D
couldn’t
I was really anxious about you.You ________ home without a word.
#86628
A
mustn't leave
B
shouldn't have left
C
couldn't have left
D
needn't leave
---Your sister nearly _______ all her spare time to her study during the three years. ----That's right， or she ________ the first place in her school in the College Entrance Examination.
#90534
A
devoted; wouldn't have taken
B
spent; wouldn't have taken
C
had devoted; hadn't taken
D
had spent; couldn't take
There was plenty of time.He .
#89668
A
couldn’t have hurried
B
mustn’t hurry
C
needn’t have hurried
D
can’t have hurried
With economy increasing steadily, people ______ enjoy a life of higher quality.
#87699
A
should
B
can
C
may
D
must