题目内容
–What’s the noise?
–It’s the drill. Since the beginning of the term, the workers _______ our heating system.
| A．are repairing | B．have been repairing | C．will be repairing | D．repair |
B
略
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–What’s the noise?
–It’s the drill. Since the beginning of the term, the workers _______ our heating system.
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