Ếch khi gặp kẻ thù sẽ tự vệ :
+ Giả chết
( đây là cách duy nhất khi gặp kẻ thù ếch sẽ tự vệ )
What does the doctor recommend to eat?
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What do happy people do?
What kind of food will help people to keep fit and stay healthy?
