改错：
1.        What does the signs mean? ______________
2.  It means you shouldn’t keep off the grass. ________________
3.        My cousin always have many questions. _____________
4.        I know a lot of about public signs. ___________________
5.  Is it mean “ No Parking?” ___________________     
6.  Mr Smith often take a walk in the park. ________________
7.  Would you please pick up it? ___________________  
8.  What day is it today? It’s the first of May. ______________
9.  My birthday is the second of April. _______________
10. Would you like watching TV with me? ________________
11. What would you like for a birthday present? __________
12. The nineth of April is my birthday. ________________
13. There is a cake have some fruit on the desk. __________
14. Jim’s father is on the farm last Saturday. ____________
15. I can’t look for my camera, can you help me? _________
16. The man is finding his mobile phone. _____________
17. The man is at school this morning. ________________  
18. Was he in the classroom now? ___________________
19. My parents are in Shanghai yesterday. _____________  
20. What would you like? I like a camera. ____________
21. They go to the farm last Sunday. __________________  
22. Jack don’t pick apples on the farm Last Sunday. ______
23. Was he play the violin yesterday evening? _____________  
24. Were there any fruit trees on the farm last week? Yes, they are.______________
25. Where was he go last week? He went to Wuxi. __________
26. There are some apples trees on the farm. ___________
27. Where were you last week? I were at a camp. __________
28. There was an excitied running race yesterday at school.____
29. Children’s Day is on the 25th of December. ___________
30. Are the students talking to Spring Festival? ____________
31. What holiday come before Spring Festival? ___________
32. Children usually have parties at school at Children’s Day.___
33. Mid-Autumn Festival is in May or June. ___________________  
34. Halloween is on October. _________________
35. Were you eat rice dumplings at Dragon Boat Festival? __________  
36. Who’s wallet is that? It’s my father’s. _______________
37. Everyone have two big eyes and a nose. ________________
38. This comb is mine. Your is over there. __________________
39. Our classroom is in this building. What about them? _____________
40. Can you show I your Christmas present? ____________
41. Is this theirs computer? Yes, it is. ___________________
42. Some of we are cleaning the classroom. ____________
43. This skateboard is very nice. Is it for she? ____________  
44. The man in front of I is my father. ________________
45. My mum asked me stay at home this afternoon. __________
46. Everyone are in the classroom. ____________
47. Whose skateboard is green? My is. _____________.
48. Where are they from? They are from my grandma. __________
49. The boy flied the kite here yesterday. _________________
50. My mum maked some cakes just now. Let’s taste them. _________

改错：
1.        What does the signs mean? ______________
2.  It means you shouldn’t keep off the grass. ________________
3.        My cousin always have many questions. _____________
4.        I know a lot of about public signs. ___________________
5.  Is it mean “ No Parking?” ___________________     
6.  Mr Smith often take a walk in the park. ________________
7.  Would you please pick up it? ___________________  
8.  What day is it today? It’s the first of May. ______________
9.  My birthday is the second of April. _______________
10. Would you like watching TV with me? ________________
11. What would you like for a birthday present? __________
12. The nineth of April is my birthday. ________________
13. There is a cake have some fruit on the desk. __________
14. Jim’s father is on the farm last Saturday. ____________
15. I can’t look for my camera, can you help me? _________
16. The man is finding his mobile phone. _____________
17. The man is at school this morning. ________________  
18. Was he in the classroom now? ___________________
19. My parents are in Shanghai yesterday. _____________  
20. What would you like? I like a camera. ____________
21. They go to the farm last Sunday. __________________  
22. Jack don’t pick apples on the farm Last Sunday. ______
23. Was he play the violin yesterday evening? _____________  
24. Were there any fruit trees on the farm last week? Yes, they are.______________
25. Where was he go last week? He went to Wuxi. __________
26. There are some apples trees on the farm. ___________
27. Where were you last week? I were at a camp. __________
28. There was an excitied running race yesterday at school.____
29. Children’s Day is on the 25th of December. ___________
30. Are the students talking to Spring Festival? ____________
31. What holiday come before Spring Festival? ___________
32. Children usually have parties at school at Children’s Day.___
33. Mid-Autumn Festival is in May or June. ___________________  
34. Halloween is on October. _________________
35. Were you eat rice dumplings at Dragon Boat Festival? __________  
36. Who’s wallet is that? It’s my father’s. _______________
37. Everyone have two big eyes and a nose. ________________
38. This comb is mine. Your is over there. __________________
39. Our classroom is in this building. What about them? _____________
40. Can you show I your Christmas present? ____________
41. Is this theirs computer? Yes, it is. ___________________
42. Some of we are cleaning the classroom. ____________
43. This skateboard is very nice. Is it for she? ____________  
44. The man in front of I is my father. ________________
45. My mum asked me stay at home this afternoon. __________
46. Everyone are in the classroom. ____________
47. Whose skateboard is green? My is. _____________.
48. Where are they from? They are from my grandma. __________
49. The boy flied the kite here yesterday. _________________
50. My mum maked some cakes just now. Let’s taste them. _________