. they were singing, the teacher came in.
A. Before
B. after
C. As
D. Until
.they were singing, the teacher came in. A. BeforeB. afterC. AsD. Until
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解决时间 2021-03-03 03:33
- 提问者网友：别再叽里呱啦
- 2021-03-02 14:06
最佳答案
- 五星知识达人网友：上分大魔王
- 2020-03-26 04:44
A. BeforeB. after(答案→)C. AsD. Until解析：表示正当什么时候，用as
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- 1楼网友：西岸风
- 2020-01-16 09:09
谢谢回答！！！
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