9. Hoa (visit) .................. her parents once a year.
10. What ...........you (do) ............on your birthday?
11. Hoa and Linh often (play).......................badminton after class.
12. Many people in the countryside still (work) ...................seven days a week.
13. She (come) ................ to France 2 years ago.
14. I (just send) .................... a letter.
15. He (work) .....................for that company for 5 years.