—Everyone in my class passed the exam.

—Everyone in my class passed the exam.
—Oh, really? It ________ difficult.

A．can’t have been	B．needn’t have been
C．must be	D．mightn’t be

hzygws 1年前已收到1个回答举报

匡推幼苗

共回答了14个问题采纳率：85.7% 举报

A

：句意：——在我班学生考试都及格了。——哦,真的吗?它一定不难。can’t have been 过去不可能，有把握的推测；needn’t have been 过去本没有必要； must be现在或将来一定，有把握的推测；mightn’t be可能不，没有把握的推测；根据句意每个人考试都及格了，可知考试不难，这是有把握的推测。故选A。

1年前

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