Câu trả lời:
1, Minh brushes his teeth twice a day.
How many times a day does Minh brush his teeth?
2, Simon has a lot of pain now because she has a toothache.
Why does Simon have a lot of pain now?
3, I felt sick after eating that food.
How do you feel after eating that food?
4, Nga went to see the dentist last week.
Where did you go last week?
5, Dr. Lai will check your teeth in a moment.
Who will check my teeth in a moment?
6, It took Dr. Phong ten minutes to fill Van’s tooth.
How long did it take Dr. Phong to fill Van's tooth?
7, My brother is going to the hospital.
Where is your brother going?
8, Mr. Cuong did morning exercises at 5.30 yesterday.
What did Mr. Cuong do at 5:30 yesterday?
9, Hoa received her aunt’s letter five days ago.
When did Hoa receive her aunt's letter?
10, There are twelve students in Lien class having toothache.
How many students are there in Lien class having toothache.
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