С исчисляемыми в единственном числе пишем а или an. Со множественным числом и с неисчисляемыми пишем some.
Объяснение:
1. It's time to do shopping. We need some food and a bottle of mineral water.
2. It's a very small town. There are some nice buildings and a museum in it.
3. He has a wife, a son here and some relatives abroad.
4. Let's buy this vase. I have some money with me.
5. We can prepare for the exam now. I brought some books from the library.
6. She likes animals a lot. She has a dog, a mouse, and some cats at home.
7. We must take some exams .
8. We met some interesting people at the party yesterday.
9. He has some victories during the season.
