用方框中所给短语的适当形式完成短文。

at a time a 20-minute walk be happy do better in every day

Three good habits that help improve your memory

Dear teachers and students.

    I'm Amy.

    Do you want to have a better memory? Many people would say yes. But how?

First, exercise . When you exercise your body, you also exercise your brain. Your brain gets more oxygen when you exercise, like .

Second, don't eat too much . Have a good diet. This will help your brain become healthier.

    Third, . If you're happy, your mind will become livelier and your memory will become sharper.

    If you have these habits, your memory will improve. You'll your studies and in your life. Thank you for listening.