帮忙用was/were doing .when ; be about to do.when;had just done.when造句,
问题描述：
帮忙用was/were doing .when ; be about to do.when;had just done.when造句,
答
They were talking when the teacher came in.老师进来的时候他们正在讲话I was about to wash my face when he came back.当他回来的时候我正要去洗脸I had just finished the homework when the telephone rang.电...