用一般过去时和过去进行时完成句子
1.She( )(see)the police car while
she( )(drive)to work.
2.I( )(make)the dinner when the telephone( )(ring).
3.She( )(look)out of the window when she( )(see)the fire.
4.The teacher( )(come)into the room while we( )(play)a game.
5.While I( )(take)my dog for a walk,it( )(begin)to rain.