Here are the suggested answers for the questions in the text:

1. a. **Police officers** are responsible for protecting lives and property by enforcing laws.
2. c. Despite the rapid pace of urbanization, craftsmen in the village still **preserve** their hundred-year-old traditional trade.
3. a. Huong Canh pottery products are made **from** the typical local clay.
4. b. What are your neighbours like? Do you **get on with** them?
5. c. Peter still doesn’t know **where** to travel to during his summer holiday.
6. c. They are having a meeting to discuss what **to do** to help disadvantaged people in the neighbourhood.
7. d. All people should join hand in protecting the environment **so that** we can gain better health.
8. b. After visiting Van Phuc village, they came **back** to their hotel for lunch.
9. a. Do you mind helping me carry these boxes to the first floor?
10. c. I’m fine.

IV. Write the correct form or tense of the verbs in brackets:

1. You can’t really have seen a UFO! You **can** (imagine) things!
2. Linda was busy when we **went** (go) to see her yesterday. She **was studying** (study) for an exam.
3. Ecologists are trying **to preserve** (preserve) our environment for future generations.