Question

【题目】The math test is too difficult for them, so they ________ finish it.

A. can’t B. can

C. mustn’t D. must

Answer 1

【答案】A

【解析】句意：数学考试对他们来说太难了，所以他们完不成。考查情态动词辨析题。A. can’t不能；B. can能够；C. mustn’t不必；D. must必须。too difficult for them对他们来说太难；根据句意和语境，可知没有能力完成，故选A。