题目

What do you feel when _______ to yourself after your mobile phone battery runs out in the middle of a call?A.leaving talking B.left talkingC.being leaving talking D.being left talking 答案：【答案】B【解析】考查省略句和现在分词作宾补。句意：你的手机电池在通话过程中耗尽，让你自言自语的时候你是什么感受？leave sb. doing sth.“使某人处于做某事的状态”，宾语you提前做主语，因此用被动语态。所以句中when引导时间状语从句的完整形式是when you are left talking to yourself，从句的主语与汽车上坡前为什么要加大速度？当载重汽车冲到半山腰时，司机要立即换为低速同时加大油门，汽车就又冲了上去，为什么？