问题
选择题
— 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．should
B．need
C．would
D．shall
答案
答案：D
考查情态动词，shall用语二、三人称时，表示一种语气，可表示警告，允诺，命令，责怪等等，在这里根据语境应表示的是允诺，所以选D。
