To keep fit we should a healthy eating habit.A. prepareB. earnC. experienceD. develop

问题补充：

To keep fit, we should a healthy eating habit.

A. prepare

B. earn

C. experience

D. develop

答案：

A. prepare

B. earn

C. experience

D. develop

解析：考查动词：A. prepare准备B. earn挣得C. experience经历D. develop发展，培养，句意：为了保持健康，我们应该养成健康的饮食习惯。选D。