Dear Tom,
Thank you for your recent letter. I was glad to hear from you again.
I want to tell you that my mother and I are spending a week in Kazakhstan. I'm so happy to be here, as it's my very first time travelling.
We've already visited a lot of places including some big cities, a zoo, local theater and a museum. Most of all I liked the theater, as the performance was very good with elements of singing and dancing.
By the way, we're coming back in a few days. I'm looking forward to meeting my father and little sister at the airport in my city. Write back soon.
Best wishes,
[name]
2) You put too much sugar in my coffee. It's very sweet.
3) We haven't got many apples left.
4) I think you cooked too much potatoes.
5) I don't drink much milk, but I should.
6) How much pepper is left?
7) There aren't much carrots in the fridge.
Much употребляется с неисчисляемыми предметами, а many - с исчисляемыми.