Anh chị giúp em với ạ, em cảm ơn.

1. Open this box. ........? A. will you 2. David has to write to his parents now A. hasn't he 3. There isn't anyone at home,.. A. isn't there 4. You used to stay in that villa. A. did you 5. I think that they won't reveal my secret. A. do I 6. Let's watch cartoon now. A shall we 7. My ...