a,His English teacher.

b,She said:"Now I think you know what you should do".

5.His English grammar was worse.

6.His English teacher.

7.Yes,she did.

8.He won the first prize in the English Speaking Contest one year later.

1.Yes,he did.

2.He needed to improve English.

3.His teacher took him to the school library.

4.Yes,she did.