----- Nội dung dịch tự động từ ảnh ----- Ex 11. Fill in each blank with an appropriate preposition. 1. Healthy eating isn’t limited ______ making healthy food choices. 2. Prevent your teen ______ sitting in front of the television or playing video games for hours. 3. Flossing enhances the positive effects ______ brushing the teeth and prevents gum infections. 4. If you find difficulty ______ sliding the floss between your teeth, it may be due to calculus deposition. 5. To lower the risk ______ health problems, teenagers should avoid consuming alcohol and smoking. 6. To be healthy, we have to keep away from bad habits because they can be bad ______ our health. 7. Healthy, ______ a body that is too fat or thin is very susceptible to dangerous diseases. 8. Healthy body image is feeling happy and satisfied ______ your body. 9. You can also help your child spend time ______ interests and activities that make them feel good. 10. Learn about the best foods for your dental health ______ keep all your pearly whites looking and feeling good.