摘要： All his attempts to unlock the door were , because he was using the wrong key. A. in return B. in vain C. in doubt D. in time
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All his attempts to unlock the door were , because he was using the wrong key.
|
A．in return |
B．in vain |
C．in doubt |
D．in time |
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All his attempts to unlock the door were , because he was using the wrong key.
A. in return B. in vain C. in doubt D. in time
查看习题详情和答案>>All his attempts to unlock the door were , because he was using the wrong key.
A. in return B. in vain C. in doubt D. in time
All his attempts to unlock the door were , because he was using the wrong key.
| A．in return | B．in vain | C．in doubt | D．in time |