Question

【题目】 — You should go over your test paper ________ you hand it in.

— OK, Mr. Wang.

A. as soon as B. though C. because D. before

Answer 1

【答案】D

【解析】

试题分析：句意：-你应该在交卷以前检查一下你的试卷。-好的，王先生。as soon as 一……就；though虽然；because 因为；Before在……之前。所以选D。