Помогите вставить: to, on, at, of, for, from в пропуски.
1. Shoppers often buy products that are on the shelves ......... eye level.
2. Tracey always takes advantage. ........ special offers.
3. Amy exchanged the dress ......... a T-shirt.
4. 3D printers are already ......... the market.
5. It's unbelievable how much food goes ......... waste.
6. This T-shirt is made ......... recycled material.
7. Cheese is made ......... milk.