Giải thích tại sao hộ mình nhe
1. Nam often (clean) _____ the house, but he cant now because he (help) _____ his sister with her homework.
2. I wanted (improve) _____ my cooking skills, and my mum let me (take) ______ a cooking course last year.
3. My grandparents (practise) _______ singing twice a week, and they (practise) _______ at the moment.
4. Next Sunday evening, I (watch) _______ their show live on TV. I think they (win) _______ a prize.
