Question

【题目】The UN officials say it could be many weeks and even months __________ a deal is reached.

A. before

B. after

C. when

D. as

Answer 1

【答案】A

【解析】句意:联合国官员说在协议达成之前还需许多个星期甚至是几个月。before意为“还需过（多久）才会……”。