You should go over your test paper you hand it in.A. beforeB. thoughC. becauseD. as soon

问题补充：

You should go over your test paper you hand it in.

A. before

B. though

C. because

D. as soon as

答案：

(答案→)A. before

B. though

C. because

D. as soon as

解析：A. before 在…之前 B. though 尽管 C. because 因为 D. as soon as一…就；句意：交试卷之前，你应该仔细检查一下试卷。故选A