摘要：( ) Walking up and down the stairs is a good kind of exercise to stay . A. health B. healthy C. healthily D. healthful
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Walking up and down the stairs is a good kind of exercise to stay _____.
|
A．health |
B．healthy |
C．healthily |
D．healthful |
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Walking up and down the stairs is a good kind of exercise to stay _____.
- A.health
- B.healthy
- C.healthily
- D.healthful