Viết dạng đúng của từ trong ngoặc, hoàn thành câu
15. she takes a lot of photos when she ( on) holiday 16. you sister (like) making model in her free time? 17. when I was ten years old, I ( begin) to play football 18. In the future, my father ( go) abroad 19. reading books in the free time ( be) my favourite hobby 20. I think skating ( be) more interesting than mountain- climbing