12. Lan asked me “ Do you like football?”.

-> Lan asked me if/whether I liked football.

13. It’s a contest in which participants have to make fire.

-> It’s a fire-making contest.

14. “Are there many places of interest in your hometown ?”, asked she.

-> She asked me if there were many places of interest in my hometown.

15. Vietnamese people celebrate their Lunar New Year around January or February.

-> Their Lunar New Year is celebrated by Vietnamese people around January or February.