III
2. about 3. of ( take care of: chăm sóc ) 4. at/ in/ for 5. with 6. at 7. in ( cavity: lỗ ) 8. in
IV
1. toothache ( đau răng ) 2. helpful ( hữu ích ) 3. worried 4. painful ( đau ) 5. scared
6. appointment ( cuộc hẹn ) 7. hurting 8. unhealthy ( ko lành mạnh )
V
1. aren't doing 2. will study 3. were 4. will you meet 5. is looking 6. are rehearsing 7. bought
8. sold 9. watched 10. are they waiting