题目内容
We ______ ; we followed the boss into the hall as his guests. How lucky we were!
| A.didn’t need to wait | B.needn’t have waited |
| C.must have waited | D.couldn’t have waited |
A
略
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题目内容
| A.didn’t need to wait | B.needn’t have waited |
| C.must have waited | D.couldn’t have waited |