Question

【题目】He work on the farm every day. I am sure about that because his skin is very black.

A.mustB.needC.mayD.can

Answer 1

【答案】A

【解析】

句意：他一定每天在农场工作。我很肯定是因为他的皮肤很黑。

考查情态动词辨析。must必须；need需要；may可能；can能，由后面的句子“I am sure about that because his skin is very black”可知，应该是一定，故选A。