(2013·辽宁五校二模)—Mum, can I watch the TV program for another twenty minutes?—Sorry, dear, it's time you ________ to bed.
#86537
A
went
B
go
C
will go
D
must go
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We      last night, but we went to the party instead.
#87198
A
must have studied
B
might study
C
should have studied
D
would study
____ keep it a little longer ? I want it very much . 
#89745
A
Able I to
B
Be able I to
C
Can I
D
Can I able to
The little girl        ,but her family was too poor at that time.
#89335
A
could go to school
B
could have gone to school
C
must have gone to school 
D
can have gone to school