1．The boy admitted (cheat) in the last exam.
答案：cheating
2．They agreed (offer) us some advice on how to paint the wall.
答案：to offer
3．Look! The old car (wash) by that old man.
答案：is being washing
4．A lot of young trees (plant) here already.
答案：have been planted
5．It is clear that the dirty house needs (clean) very much.
答案：to be cleaned
