1) How often does he brush his teeth?

2) Why is Simon in a lot of pain now?

3) How do you feel after eating that food?

4) When did Nga went to the dentist?

5) Who will check my teeth?

6) How long did it took Dr Phong to fill Van's teeth?

7) Where is your brother going?

8) What did Mr Cuong did at 5.30 yesterday?

9) Who did Hoa received letter 5 days ago?

10) How many students in Lien's class having a toothache yesterday ?

1. How often does he brush his teeth 

2. Why is Simon in a lot of pain now

3. How do you feel after eating that food

4. When did Nga went to the dentist

5 Who will check my teeth

6 how long did  it took Dr Phong to fill Vân 's teeth

7 Where is your brother going 

8 what did  Mr Cuong did at 5:30 yesterday

9Who did Hoa  received letter 5days ago

10 how many students in Liên's class having a toothache  yesterday

( nếu thấy hay thì vote giúp mk 5 sao một cảm ơn và  câu TL hay nhất nhé, thanks bn rất nhiều )^^