W______ Mario was writing a letter,the phone rang.

W______ Mario was writing a letter,the phone rang. she was writing his letter ______ the telephone rang. A:whil he was writing while suddenly the phone rang 哪里错了?只能改一处! he was writing while suddenly the phone rang 哪里错了? _______(When/While) Marry was writing a letter ,the children The phone rang ___ someone was knocking at the door A while I was reading a book （ ）the phone rang.A.before B.when C.as I was just about to leave the house___the phone rang(a)while I__my clothes,and the phone rang A whash ,B washed ,C am was I _____ my clothes ,and the phone rang.A ,washed B ,was wash The phone rang （ ）I was doing my homework?A when B while 为什么 it was about to leave my house _ the phone rang A while B wh