Drinking more water is a good way to the flu.A. prevent B. cause C. break

问题补充：

Drinking more water is a good way to the flu.

A. prevent B. cause C. break

答案：

解析：句意：喝更多的水是一种预防流感的好方法。prevent预防；cause引起；break打坏，打碎。故选A。