Cho dạng đúng của từ trong ngoặc
1, my father ( water ) these flowers yesterday afternoon
2, mary ( not/ cook) dinner yesterday
3, why you ( not/ go ) to school this morning ? Because I (be) sick
4, my sister ( repaint ) her bedroom last sunday
5, they ( not /play) football 2 days ago - they ( stay ) at home to wach TV
6, how long you ( collect/ stamps) - I ( collect ) them for 7 years