1.He visited the dentist yesterday. à When .............................................................................. ? 2. Lan brushes her teeth twice a day. How often........................................................................ ? 3. I didn’t go to school yesterday because I was sick. Why ................................................................................. ? 4. Minh saw Tom this morning. Who ................................................................................. ? 5. We played tennis yesterday morning. What …………………………………………………………….? 6. Tony stayed at home last night. Where …………………………………………………………..? 7. Olivia started this job three years ago. When ……………………………………………………………? 8. Her parents are busy because it is nearly harvest time. Why …………………………………………………………….? 9. The green dress is 30,000 dong. How much ……………………………………………………..? 10. She goes swimming twice a week. How often ....................................................................................? 11. Nam works in the city. Where ..........................................................................................? 12. He watches TV once a week. How often ................................................................................... ? 13. His mother was in Hue last year. Where ......................................................................................... ? 14. Nam listens to music in his room. Where ......................................................................................... ? 15. They have dinner at home. Where ......................................................................................... ? 16. He went to the dentist because he had a toothache. Why ............................................................................................. ? Giúp mik với