Have you ever been upset when ________ to yourself after your mobile phone battery runs out in the middle of a call?
A.being left talking
B.left talking
C.being left talk
D.leaving talking
网友回答
B解析when left talking是when you are left talking的省略形式，意为“当你对自己说话时”。leave sb．doing使某人处于某种状态中。