They had camped once before, they knew what to take.A. becauseB. nowC. soD. since

发布时间：2020-08-16 07:59:07

They had camped once before,      they knew what to take.
A. because
B. now
C. so
D. since

网友回答

A. because
B. now
(答案→)C. so
D. since
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