请帮我纠正下这篇英语里的语法错误.
1个回答

第一张

第1行 homework不能用many形容,要用much

2 grade改成grades

3 That is what the Chinese students' situation is i known

5 a改成an

1 ,去掉

3 do改成have

5 do去掉;should改成to

7 students'

1 answers;summarized

第二张(以下为改正后答案)

1 holidays

4 they must do

7 hours a day

9 money for;and education

10 they just do;buy things

11 that they want

12 writting or drawing

13 E-mails

14 class begins

15 ends at 15:00

16 grades

17 their grades

18 have responsiblity for

第三张(同上)

1 difference

2 much homework

5 buy things

7 also去掉,此句最后加either;our lives

8 it begins and ends

9 Our grades are;our grades have

10 grades are;our grades

3 easily

7 schools

最后一句不知道你要讲什么,最后两个单词不能这么搭配