SAT句子改错
问题描述：
SAT句子改错
Despite repeated warning by traffic saftey experts, many automobile accidents still occur while (both driving and ) talking on cell phones.
A.
B. drivers are
为什么A不对?
答
while引导的时间状语从句如果使用省略形式（省略从句的主语和be动词）,则要求该从句的主语和主句主语必须相同.但是很明显主句的主语是many automobile accidents,指物；而while从句的主语如果选A的话,则明显从句主语...