语法与词汇
4.
Which of the following sentences expresses a presumption?
A、
You must be here by ten.
B、
You must not keep us all waiting.
C、
She must go to Beijing tomorrow.
D、
Your father must be nearly eighty now.
【正确答案】
D
【答案解析】
情态动词。A、B、C项表示必须，即说话人的主观意志，或要求对方必须做某事；D项表示“推测”，即说话人看来一定是。
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