改错：1.Tom said that he has been to beijing 2.I belive he will

改错：1.Tom said that he has been to beijing 2.I belive he will not leave 3.She says what she goe
改错：
1.Tom said that he has been to beijing
2.I belive he will not leave
3.She says what she goes to school
4.I dont konw that he will come
5.He doesnt know who the book id
6.Could you tell me how sbould I go
请保证正确率