单句改错 【小题1】My chief purpose is point out the difficulties of the matter. _____________________________________________________ 【小题2】Do you know how to making the baby stop crying? _____________________________________________________ 【小题3】John was made clean the classroom for a week as a punishment. _____________________________________________________ 【小题4】It’s a bit difficult for us finishing writing the composition in a quarter of an hour. _____________________________________________________ 【小题5】Every day he asks his mother to bring him something eat. _____________________________________________________ 【小题6】They did what they could prevent the soil from being washed away by water. _____________________________________________________