Question

【题目】—Ten dollars for this pair of shoes!You be joking!

—I’m serious.There was a sale in that shop.

A. must B. should

C. may D. need

Answer 1

【答案】A

【解析】句意：-这双鞋要十美元! 你一定是在开玩笑! -我是认真的。那家商店在廉价出售。A. must 情态动词，必须或一定；B. should情态动词，应该；C. may情态动词，可能；D. need情态动词，需要。根据语境可知本句表示肯定的猜测“一定”。故选：A。