简单英语,急急急!
1.I was sending an e-mail ________________(当电话响时).
2. ______________(父亲还在睡觉)when I left home this morning.
3. I was reading a history book ___________(当有人在敲门时).
4.______(同学们在上生物课)when the visitors came.
5. ________(司机开车回家)when it rained last night .
参考答案:1.when the telephone rang.
2.My father was sleeping.
3.when someone rocked door.
5.The driver was getting home.
(个人建议,仅供参考)