【2014年山东省临沂市中考】When you are swimming, ________ your ears. You can use earplugs (耳塞) to stop water getting into your ears.
She lives _______, but she doesn’t feel _______.
_______ children in Africa have little food to eat, and we can help them.
Lily likes playing _______ guitar.
辨音
---Is that your book? ---Yes, ________.