What happened with the old man?改错,每句只有一处错误

问题描述:

What happened with the old man?改错,每句只有一处错误
I will use the knife cut up the carrot.
Mike fell off the tree and hurted his head.

1 with -> to( happen to sb )
2 cut -> to cut ( use sth to do sth
3 hurted-> hurt ( hurt 的过去式与原形相同)