Write a letter (≈30 words) to your pen friend. Tell him/her what subject is your favourite and why you like it.

Dear Caroline,

It was great to hear from you! I haven't written to you for ages because I was busy studying.

You ask me what subject is my favourite. Well, I think it's chemistry. I love setting up experiments and discovering properties of different substances. I like watching beautiful reactions and I want to learn how they happen and why.

And what is your favourite subject?

I’ve got to go now! Drop me a letter when you can.

Yours,

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