Прочитайте текст (B1–B3). Заполните каждый из пропусков только одним предлогом, подходящим по смыслу. Have you ever put on weight and decided you needed to go on a diet? Think carefully before you do. There are a lot of diets, which can often do more harm than good. If you stick to one of them and lose weight, you may end up gaining it all again after you finish. More important is to think long term about your eating habits (B1) ... enough, you should aim for a balanced diet – one which provides you (B2) ... all the vitamins and nutrients you need. Eat more fruit and vegetables. They're packed with good stuff for your body, and are generally low (B3) ... calories.