4. Use the vocabulary of the lesson in the following sentences. 1. Our health often _______ on ecology. 2. In spring, our body lacks _______ and minerals necessary for our living. 3. Change your l _______, or you'll ruin your _______ in several years! 4. He is very active: he goes to work by bicycle and always uses _______ instead of the lift. 5. If you eat much, you'll gain _______.

Here are the completed sentences with suitable words: 1. Our health often **depends** on ecology. 2. In spring, our body lacks **vitamins** and minerals necessary for our living. 3. Change your **lifestyle**, or you'll ruin your **health** in several years! 4. He is very active: he goes to work by bicycle and always uses **stairs** instead of the lift. 5. If you eat much, you'll gain **weight**.