Phần III: Lỗi sai

1. A (adding → to add).


2. D (come up → came up).


3. B (moving → to move).


4. B (with ethnic minority → with ethnic minorities).


5. D (from the distance → from a distance).



Phần IV: Dạng đúng của động từ

1. was built


2. were not studying


3. had


4. have used


5. to choose



Phần V: Đáp án đúng

1. A


2. D


3. B


4. A


5. C