Đáp án:
Giải thích các bước giải:
2019−20192020=2019.(1−12020)=2019.20192020=2019220202019−20192020=2019.(1−12020)=2019.20192020=201922020
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?
