— How do you keep fit?
—By having a healthy diet and regularly.
A. turning out
B. working out
C. giving out
D. going out
网友回答
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。