`1. - f`

`2. - d`

`3. - e`

`4. - h`

`5. - a`

`6. - g`

`7. - c`

`8. - b`

`X.`

`1.` C. number

- a number of drawbacks: một số hạn chế

`2.` B. jams

- the problem of traffic jams and traffic accident: vấn đề tắc đường và tai bạn giao thông

`3.` D. in

- increase in population: tăng dân số

`4.` B. made

`5.` B. negatively

- negatively: ành hưởng tiêu cực

`6.` consequence 

- Hậu quá xấu

`7.` A. noise

- Vì vế trước có the city is noisy, even at night : tiệc tối, vì vậy là ô nhiễm tiếng ồn

`8.` more

- Trở nên khó khăn hơn

1. What is the function of the Magic Number? - f. It is a service for counseling and protecting children and young adults in Vietnam.
2. I wonder whether to encourage him to follow his dream. - d. I think you should do it.
3. Was she delighted to take a course on medicine as her parents wished? - e. No, she wasn't.
4. Artisans have to follow 15 stages to make a conical hat, don't they? - h. Yes, they do.
5.Shall we try making a lantern when visiting Hoi An? - a. That's cool.

6. Sherry, getting over the jet lag? - g. Yes, I slept like a log right after arriving home.

7. Why did you turn down his invitation to the party? - c. I had an appointment with my doctor. I suffered from stomachache those days.
8. How can we reduce the pollution in urban area? - b.We can use public transport instead of cars or motorbikes.

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1C. Vì có a number of drawbacks: một số hạn chế

2B. Vì the problem of traffic jams and traffic accident: vấn đề tắc đường và tai bạn giao thông

3D. Vì increase in population: tăng dân số.

4B. made

5B. Vì negatively: ành hưởng tiêu cực

6B. consequence 

7A. noise

8D. more