— How do you keep fit?—By having a healthy diet and regularly.A. turning outB. working ou

问题补充：

— How do you keep fit?

—By having a healthy diet and regularly.

A. turning out

B. working out

C. giving out

D. going out

答案：

A. turning out

(答案→)B. working out

C. giving out

D. going out

解析： 考查短语辨析。turning out 证明是，原来是，working out 算出，锻炼身体，giving out 分发，going out 出去，句意：你如何保持健康？通过健康的饮食和定期的锻炼。故选B。