He met many problems------ he was going over his lessons.
A. before
B. as soon as
C. since
D. while
He met many problems---he was going over his lessons.A. beforeB. as soon asC. sinceD.
答案:2 悬赏:30 手机版
解决时间 2021-01-04 04:41
- 提问者网友：你独家记忆
- 2021-01-03 10:10
最佳答案
- 五星知识达人网友：执傲
- 2021-01-03 11:22
A. beforeB. as soon asC. since(答案→)D. while解析：考查连词。此句中主句中是一般过去时，而从句中是过去进行时，故用while。
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- 1楼网友：过活
- 2021-01-03 11:54
谢谢了
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