2.There's some bread, but there isn't any butter.
3.There isn't any fruit juice, but there's some water.
4. There aren't any bansnas, but there're some apples.
5. There're some grapes, but there isn't any cheese.
6. There's some pasta, but there isn't any rice.
7. There aren't any onions, but there're some carrots.
8. There's some salt, but there isn't any pepper.

there're - когда множесвенное число
there's - кода единственное
если добавить not , то это отрицание.

some - в положительных предложениях
any - в вопросительных и отрицательных.