这几道因为题里面哪里有错误?

问题描述:

这几道因为题里面哪里有错误?
1.We will have a party next Friday.2.John sent a letter to his friend last weel.3.Mary is writting a postcard to her cousin.4.All the students can not answer the difficult question.
第二题是我打错了而不是错误的sorry~

1 have—hold
2 weel-week
3 writting-writing
4