3.They waited _it was dark before leaving,they didn’t want anyone to see them leave.A.since;because B.until;as C.unless;for D.so;because

分类: 作业答案 • 2022-04-13 14:30:53

问题描述：

3.They waited _____it was dark before leaving,____they didn’t want anyone to see them leave.
A.since;because B.until;as C.unless;for D.so;because

答

B.until;as

答

选B，按句意，他们在离开之前一直等到天黑，因为他们不想任何人看到他们离开，直到 until ，as 表原因

答

他们知道天黑才离开,因为不想被任何人看到他们离开.单看第二句,三个单词均表示因为,都可以.根据句意是直到天黑,unless是除非的意思,不合题意.所以选B

3.They waited _____it was dark before leaving,____they didn’t want anyone to see them leave.A.since;because B.until;as C.unless;for D.so;because