According to the latest study，most traffic accidents be prevented if drivers are careful enough．
#62242
A
must
B
can
C
have to
D
need
推荐题目
— Can we leave the classroom now?— No, you ______. You ______ to leave until the bell rings.
#74363
A
mustn’t, are allowed
B
don’t have to, are allowed
C
needn’t, aren’t allowed
D
can’t, aren’t allowed
---I haven’t got the reference book yet, but I’ll have a test on the subject next month. ---Don’t worry. You ____ have it by Friday.
#63390
A
could
B
shall
C
must
D
may
I am fond of my sister but she has one serious shortcoming. She _________ be really stubborn.
#63474
A
can
B
may
C
must
D
shall
Could you please_____ the piano so loudly? Your brother is having a rest now.
#74747
A
not to play
B
not play
C
don’t play
D
to not play
– James didn’t ____ last night, did he?– No. He ____. We had changed our plan.
#63144
A
turn away; shouldn’t have come
B
turn up; needn’t have come
C
turn up; didn’t need to come
D
turn away; doesn’t need to come