简单英语选择 ID002

简单选择 ID002 The time is not distant ___ modern communications will become widespread in China's
vast countryside.
B.when
D.before
二选一，说说错在哪？   

参考案 The time is not distant _B__ modern communications will become widespread in China's
vast countryside.
B.when
D.before
when在此处引导一个限制性定语从句，修饰the time.把它调到is not distant前面。
句意：现代通信普及的时间不远了。

参考文献：http://blog.sina.com.cn/calendula28