Question

【题目】Another two months will be needed before the bridge_______.

A. completes B. is completed C. has completed D. will be completed

Answer 1

【答案】B

【解析】句意：修完桥还需要两个月。Before，在……之前，引出时间状语从句。时间状语从句的主句是一般将来时态时，从句要用一般现在时态，C、D被排除。The bridge是complete的承受者，句子用被动语态。故选B。