What was Tom doing____it was rain 填while 为什么要填while呢.

What was Tom doing____it was rain 填while 为什么要填while呢. while he was studing为什么要was i was doing my homework while my mother (was cooking)为什么不填co While I was watching TV,the phone______(ring) 填什么 __ he was a boy,Pele had a dream.为什么填Ever since 能填 while 有什么 When/While it began to rain ,I was watching TV Tom was sad because his cat （ ） 为什么这里填died呢? While he was e() an old man __ the accident __ while he was __ __.该填什么? someone____at the door while Tom was having his supper. Tom fell into the lake while he was boating . It was a while before Tom could appreciate the joke .