Thenewsupermarketannouncedthatthefirsttopurchasegoodson...

问题详情：

The new supermarket announced that the first to purchase goods on the opening day        get a big prize.

    A. must   B. will    C. shall    D. need

【回答】

C

知识点：虚拟语气与情态动词

题型：选择题