新概念英语1册的一个练习题用when 和 while 连接以下句子.1.My friend broke his leg.
新概念英语1册的一个练习题 用when 和 while 连接以下句子.1.My friend broke his leg.+ He was playing football.2.We were driving into the city.+ We had an accident.3.She was leaving the house.+ The telephone rang.