问题
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.
A:must
B:need
C:would
D:shall
B:need
C:would
D:shall
正确答案是：
同类题型
He had hardly reached home _______ an unexpected guest came to visit him.
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