1. computer / class / Hoa / use / in / Computer Science / how / learns / to / a / her =>

Hoa learns how to use a computer in her Computer Science class

2. rings / bell / the / noisy / yard / is / until / the / very

=> Until the bell rings, the yard is very noisy

3. eating / are / the most / chatting / common / ways / recess / at / of / relaxing / and

=> Eating and chatting are the most common ways of relaxing at recess

4. Geography / study / do / what / in / your / class ?

=> What do you study in your Geography class?

5. playing / like / students / some / are / games / catch / or / blindman's buff

=> Some games students like playing are catch or blindman's buff

1. She goes to school six days a week

=> How many days a weeks does she go to the school ?

2. We learn how to use a computer in computer science class

=> What do you learn in computer science class?

3. Her favorite subject is English

=> What is her favorite subject?

4. This book is 30,000 dong

=> How much is this book?

5. They are playing catch in the school yard

=> What are they doing in the school yard?

6. I usually talk with my friends at recess

=> What do you usually do at recess?

7. My father is jogging in the park

=> Where is your father going jogging?

8. Classes always begin at seven o'clock

=> When do classes begin?

Bài 4
1. Hoa learns how to use a computer in her Computer Science class 2. 

2. Until the bell rings, the yard is very noisy

3.  Eating and chatting are the most common ways of relaxing at recess

4.  What do you study in your Geography class?

5.  Some games students like playing are catch or blindman's buff
Bài sau
1. How often does she go to school ?
2. What do you learn in your computer science class?

3 What is her favourite subject ?

4 How much is this book ?/ What is the prices of this book ?
5 What are they doing in the school yard ?.

6 What do you usually do at recess ?

7 Where is your father jogging ?

8 What time do the classes always begin ?.