The time is not far away when mobile phones widespread in China’s vast countryside. A. w

问题补充：

The time is not far away when mobile phones widespread in China’s vast countryside.

A. will become

B. become

C. shall become

D. have become

答案：

(答案→)A. will become

B. become

C. shall become

D. have become

解析：该题易误选B，将when引导的从句误看作时间状语从句，谓语动词用一般现在时表示将要发生的动作。但本句中的when 引导的是定语句，故用一般将来时表示将要发生的动作，will become符合题意。