I.

1. The oldest part of Stockholm is the Old Town.

2. There are about 3,000 people.

3. Yes, there are.

4. It is awarded each year.

II.

1. I have been to Hanoi three times. 

2. Where did you play badminton yesterday?

3. In the future, robots will be able to understand what we say.

III.

1. If you don't study harder, you won't pass the exam. (If + simple present, future simple)

2. I have never talked to a freiger before. (This is the first time + S + have/has + Vpp ... = I + have/has + never + Vpp ...)

3. In spite of his sickness, Peter continued to study his lesson. (In spite of + N/N phrase/V-ing, clause)

Reading
1. The oldest part of Stockholm is the Old Town
2. There are about 3000 people in the Old Town
3. Yes they are
4. The Nobel Prize award on 12 December
Writing
I
1. I have been to Hanoi three times
2. Where did you play badminton yesterday
3. In the future, robots will be able to understand what you say.
II
1. If you don't study harder, You won't pass the exam
2. I have never talked to the foreigner
3. Thay Although thành in spite of the fact that