12. Tam doesn’t type as fast as she used to.
- Tam used ………………………………………………..
13. The distance from my house to Ha Noi is over 20 kilometers.
->It’s........................................................................................................................................
14. My brother often watched TV in his free time last year, but he no longer does it.
-> My brother used........................................................................................................
15. People in the countryside will use much biogas in the future.
-> Much .................................................................................................
16. These flowers are Lan’s.
-> These are.............................................................................................. gapppppppppppppppppppppppppp\