问答题

【参考答案】

[解析] 此题考查状语从句的连词。while和before都是时间状语的连词，但while是当…的时候，before是在......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)
<上一题 目录 下一题>
热门 试题

单项选择题
What does the woman mean
A．Dr. Wang is as busy today as yesterday.
B．Dr. Wang is not so busy today as yesterday.
C．Dr. Wang is busier today than yesterday.
单项选择题
What do we know about the man
A．He painted the door.
B．He touched the paint.
C．He wants to paint the door.
相关试题