1. Whose pen is that ?
2. How much time does it take him to go to school by bike ?
3. What is your telephone number ?
4. When did you receive a ltter from John ? 
5. What does Minh usually do after getting up?
6. How often do you brush your teeth ?
7. What time does Nga have an appointment this moring ?
8. When does she go to bed ?

Ex1. 

1. There aren't many festivals in winter.

2. I will do it in a minute.

3. This festival is held every two years.

4. the couple celebrated their 10th wedding anniversary in a luxury restaurant.

5. I need to hand in the report to my teacher before 5p.m. today.

6. He would always talk with a nationalistic tone.

7. My brother is preparing some traditional dishes in the kitchen.

8. The room is decorated with flowers and balloons.

Ex2.

1.B
2.D
3.B
4.C
5.D
6.D
7.B

Ex3.

1.Whose pen is that?

2.How long does it take him to go to school by bike?

3.What is your phone number?

4.What did you receive from John last week?

5.What does Minh do after getting up?

6.How often do you brush your teeth?

7.What time does Nga have an appointment at 10.30 this morning ?

8.When does she often go to bed?