—Daniel must have lost his job in that unemployment crisis he?—I don’t think so. Yesterda

问题补充：

—Daniel must have lost his job in that unemployment crisis, he?

—I don’t think so. Yesterday I saw him working together with his colleagues.

A. didn’t

B. doesn’t

C. mustn’t

D. hasn’t

答案：

(答案→)A. didn’t

B. doesn’t

C. mustn’t

D. hasn’t

解析：当must表示推测时，其后反意疑问句部分的时态取决于实际时态而不是must后的形式; 本题中“失去工作”的动作发生在过去，因此用did来反问。

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