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1. It is about 100 km from Ha Noi to Hai Phong. 
2. How far is it from Hai Duong to Hue?
3. Some of my friends will be invited to my birthday party next week. 
4. The doctor examined him.
5. The little girl isn't treated in a normal way by the step-mother.
6. Every day people cut down thousands of trees in the world.
7. The blue dress is cheaper than the red dress./ The blue dress is not as expensive as the red dress.
8. You should start to run and see if that helps you to lose weight.
9. Although it was a comedy, almost audience fell asleep.
10. John has been chosen for the school's football team.
11. Although it is very noisy in the city, we enjoy living there.
12. We were disappointed by the failure of the team.
13. The guide doesn't speak slowly enough for me to understand.
14. I'm very happy that you come to see me again.
15. Some grammatical rules are hard to explain. 

1.It is about 100 km from Ha Noi to Hai Phong.

2.How far is it from Hai Duong to Hue?

3.Some of my friends will be invited to my birthday party next week.

4.The doctor examined him.

5.The little girl isn't treated in a normal way by the step-mother.

6.Every day people cut down thousands of trees in the world.

7.The blue dress is cheaper than the red one.

8.You should start to run and see if that helps you to lose weight.

9.Although it was a comedy,almost audience fell asleep.

10.John has been chosen for the school's football team.

11.Although it  is very noisy in the city,we enjoy living there.

12.We were disappointed about the failure of the team.

13.The guide doesn't speak slowly enough for me to understand.

14.I'm very happy that you come to see me again.

15.Some grammatical rules are hard to explain.