I was getting ready to watch Tv,_________the phone rang

问题描述:

I was getting ready to watch Tv,_________the phone rang
A.while B.as C.until D.when

D when 意思(就在此时突然) 记住标志是when前面用进行时
i was reading when the light went out.灯灭了
i was about to have dinner when he ran in.as 为什么不可以呢绝对不可以,此处when是特殊用法,不能用as替换