Question

 (2010年厦门市质量检查)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

解析：选A。考查时间状语从句。句意：在协议达成之前还需要许多星期甚至几个月。before在本句中可以理解为“还要过(多久)才会……”。