Complete the sentences with words or expressions （选词填空完成句子）.luxuryfree fromrich inin the wildcontain1 Fruit and vegetables are_________vitamins.2 Sara’s parents have a lot of money. She is used to living in__________ .3 Organic milk is very good for babies because it’s__________ pesticides.4 I don’t think people should keep pets, because animals are happier __________.5 This product may__________milk and eggs.