问题补充:
They must have finished the work by the end of last month, ?
A. mustn’t they
B. haven’t they
C. hadn’t they
D. didn’t they
答案:
A. mustn’t they
B. haven’t they
(答案→)C. hadn’t they
D. didn’t they
解析:可联系答.案.网客服索取。
时间:2021-09-06 21:47:38
They must have finished the work by the end of last month, ?
A. mustn’t they
B. haven’t they
C. hadn’t they
D. didn’t they
A. mustn’t they
B. haven’t they
(答案→)C. hadn’t they
D. didn’t they
解析:可联系答.案.网客服索取。