题目内容
(请给出正确答案)
[单选题]
He must have finished the work last night, ___________ [来源:Zxxk.Com]
A.didn’ t he
B.hasn ’ t he
C.haven ’ t he
D.did he
提问人:网友lixin080108
发布时间:2022-01-07
A.didn’ t he
B.hasn ’ t he
C.haven ’ t he
D.did he
It _____ last night, for the ground is wet. |
[ ] |
A. must rain B. must have rained C. must be raining D. can't have rained |
Wind turbine designs ...
A、are already very good
B、will be much more efficient in the future
C、are expected to improve in the future
D、are good for the environment
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