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— Where is Mr. Wang?
— He is not here. He must _______ the students’ papers in the office.

A.correctB.have correctedC.be correcting D.corrects

C

解析试题分析:考查时态。句意:—王先生在哪里?—他不在这里。他一定是在办公室里批改学生的试卷。根据句意是指现在正在发生的事情,故使用must be doing对现在的情况进行推测。故C正确。
考点:考查时态
点评:时态题的考查关键是抓住句子的上下文含义和句中的时间状语。要根据时间状语来选择合适的时态,在平时的学习中要注意积累有关时态的用法和各种时态的特殊之处。

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