Supply the most suitable word for each blank. In the 21st century food will (61)______ more than just you feed you. A new range of products appearing on shelves in shops and supermarkets (62) ______ designed to give you specific health benefits. The demands of modern life make these foods very attractive. Not only do they provide proven ways to improve health, but they are also very attractive (63) ______ a quick and convenient way of making sure we enjoy a healthy diet.           In some countries it is already possible to buy crisps that make you feel (64) ______ depressed, chewing gum that increases your brain power and tea that helps you (65) ______ over the tiredness associated (66) ______ long-distance air travel. In the future, experts promise biscuits that will keep you healthy, and hot chocolate drink to give you strong bones.           Despite the fact that these “functional” foods cannot replace a balanced diet and regular exercise, they can help the body perform at (67) ______ best a lot of the time. At (68) ______, these foods are more expensive than other foods, but that is due to the ingredients they (69) ______ of and the way they are made. All the foods contain probiotics (70) ______ increase the number of “good” bacteria in your stomach, helping to keep your digestive system healthy.