Nhờ m. Tuýp đỡ ạ ét ô ứt

9. Alice hurt herself while she A. were skating 10. I met my neighbor while I A. was walking B. was walk 11. Kien stepped on Maria's feet while they A. was dancing B. dancing B. was skates 13. Jane 12. Sally A. were having B. had A. sleeping C. was skating D. skated home from work. C. ...