Some people feel sick when they read a book in a car or on a boat．
#74740
A
must
B
should
C
may
D
need
推荐题目
-----Who has made a mess in my room? -----Who else it but your naughty son?
#63521
A
could do
B
could have done
C
did
D
had done
I'm going to Europe on vacation together with John if I ________ find the money.(2012·全国Ⅱ)
#62442
A
can
B
might
C
would
D
need
There was something wrong with the network，or the e-mail____ earlier.
#62904
A
could have been sent
B
might be sent
C
need have been sent
D
must be sent
— Must I stay here with you?— No, you . You may go home, but you go to the net bar (网吧).
#74128
A
mustn’t；don’t have to
B
needn’t；mustn’t
C
must；need
D
need；must
—Boy, you _______ lean (伸) out of the window while the bus is running. That’s dangerous.—Sorry, I won’t do that again.
#74149
A
needn’t
B
oughtn’t
C
couldn’t
D
mustn’t