Question

Tiny and his friends was или were in the mountains last winter Was или were you at home last night? - Yes , I was или were The house was или were old but nice She was или were in the city There was или were some letters on the table

Answer 1

После I, she, it - was, после слова во мн.числе - were.

Answer 2

Here are the corrected sentences:

1. Tiny and his friends were in the mountains last winter.
2. Were you at home last night? - Yes, I was.
3. The house was old but nice.
4. She was in the city.
5. There were some letters on the table.