1.C

Dựa vào thông tin: In the first year of secondary school, I had some difficulties in learning English. My English pronunciation was really bad and my English grammar was worse.

2.B

Dựa vào thông tin: I won the first prize in the English Speaking Contest held for secondary school students in my hometown.

3.D

Từ she này thay thế cho cụm my teacher ở câu phía trước nó, giúp tránh việc lặp lại từ.

Dựa vào thông tin: One afternoon after the lesson, my teacher of English told me to wait for her outside the classroom. She took me to the school library and showed me cassettes of pronunciation drills kept in a glass bookcase.

4.A

A. Teacher told Lan how to use an English-Vietnamese dictionary.

Sai ở chỗ: English-Vietnamese

Dựa vào thông tin: She also told me how to use an English-English dictionary to improve my English grammar.

`->` Not True.

B. Lan made much progress and only one year later, she was successful.

Dựa vào thông tin: I made much progress and only one year later, I won the first prize in the English Speaking Contest held for secondary school students in my hometown.

`->` True.

C. Lan had some difficulties in learning English.

Dựa vào thông tin: In the first year of secondary school, I had some difficulties in learning English. 

`->` True.

D. Lan didn't want her father and mother to know about this.

Dựa vào thông tin: I didn't want my father and mother to know about this.

`->` True.