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1) I think primary school is interesting. It is also a lot of fun.

2) In primary school I learnt to read texts, to write exercises, to make decisions, to play a lot of games.

I've got a lot of friends at school.

I've got five or six lessons a day.

I haven't got many teachers.

I've got a favourite subject.  It is Mathematics.

I've got a lot of rules to follow.

I've got a few textbooks.

3) In secondary school I'll have new responsibilities, different subjects, more interesting tasks, more homework, good friends and better marks (I hope).

4) I'm scared that I won't be good at Physics and Chemistry.

I'm scared that I won't have time for my hobbies.

I'm scared that I won't have time to play football  with my friends.

5) My mum is right when she tells me:

Do your best!    Don't forget to do you homework!

Have proper meals! (Питайся правильно!)  

Be more responsible! (Будь более ответственным!)