1.Have you___(see)Jack?
问题描述:
1.Have you___(see)Jack?
2.They were___(listen)to the radio.
3.He says he___already___(repair)the car.
4.The teacher___(leave)his book on the desk yesterday.
5.Look!The boy___(wave)to you!
6.I___(do)my homework when the telephone rang.
答
1.seen
2.listening
3.has repaired
4.left
5.is waving
6.was doing