сделать утвердительные и отрицательные в настоящем времени, утвердительные и отрицательные в прошедшем времени (ex9)

1. Coca-cola isn't only enjoyed in China, but in the whole world.
2. Cheese isn't made from water, it is made from milk
3. Meat isn't bought in museum, it is bought in shops
4. Flowers aren't always grown in villages, they are grown everywhere
5 Zoos are visited in Winter
6. Pictures are sometimes stolen from museums