(给动词的适当形式填空)while her mother _____(put) Cathy to bed,the door bell____(ring)
问题描述:
(给动词的适当形式填空)while her mother _____(put) Cathy to bed,the door bell____(ring)
答
was putting
rang
答
while her mother was putting (put) Cathy to bed,the door bell rang (ring)