— Mum, would you please buy me an MP5 player? — If you can help do some housework the whole vacation, you ____ have one as a reward.     
#87589
A
must
B
need
C
would
D
shall
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If they       what I was saying, they'd know what I was talking about
#86853
A
took the trouble to listen to
B
had trouble listening to
C
take the trouble to listen to
D
have trouble listening to
Listen! His family must be quarreling, _____?
#87227
A
mustn’t it.
B
isn’t it.
C
aren’t they.
D
needn’t they.