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Father is sleeping . You’d better __________ quiet .
#51035
A
to keep
B
keep
C
keeping
D
not keep
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 -What did Mr. Green say to his son?      -He told him           .
#48417
A
didn't smoke
B
don't smoke
C
not to smoke
D
not smoke
The man went into the room, _____ rather strange.
#50355
A
to look
B
looking
C
looked
D
and looking
Three trees can do the job of 15air-conditioners _________ almost all day.
#48595
A
run
B
are running
C
ran
D
running
My shoes are worn out．They  need_______．
#48610
A
to repair
B
be repaired
C
repaired
D
Repairing
Our music teacher is always heard _______ in the music room.
#50599
A
sing
B
sang
C
singing
D
to sing