—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
网友回答
(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。