Choose the right grammatical form in each gap to complete the text

Hi everyone!

My name is Nick. I [is|are|am|'s] 10 years old. I live in Brighton, England. I want to tell you about my favourite hobby. It [am|are|is|am not] horse riding!

I like riding a horse in a beautiful place. There [are|am|is|isn't] lots of wonderful fields near my house. Also, I live not far from the sea, so sometimes my instructor and I ride to the seaside. And it [is|are|am|s'] very beautiful, especially in the evening.

Of course, horse riding is not easy. I train a lot every day to ride well. There [aren't|are|isn't|am] much free time in my timetable.

And what [am|aren't|s'|is] your hobby?