The central heating system of this office building is down and several workers it right now.
A. had repaired
B. have repaired
C. repaired
Dare repairing
The central heating system of this office building is down and several workers it right n
答案:2 悬赏:10 手机版
解决时间 2021-12-21 15:42
- 提问者网友：沦陷
- 2021-12-20 20:58
最佳答案
- 五星知识达人网友：雪起风沙痕
- 2021-12-20 22:16
A. had repairedB. have repairedC. repaired(答案→)D. are repairing解析：句意：这座办公楼的集中供暖系统坏了，几名工人目前正在修理。表示现在正在做某事，用现在进行时，选D。
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- 1楼网友：过活
- 2021-12-20 22:42
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