You look so tired tonight. It is high time you_________.
#90004
A
went to bed
B
went to sleep
C
go to bed
D
to sleep
推荐题目
The sleeping baby would be scared _______ a sudden loud noise. 
#86894
A
was there
B
there was
C
should there be
D
there should be
They urged that the library ______ open during the vacation.
#86800
A
must be kept
B
is kept
C
would be kept
D
be kept
—May I speak to the patient now?—No, you _____. He is too weak now.
#90168
A
needn’t
B
may not
C
mustn’t
D
oughtn’t