—The land in the southwest of China is in great need of.—Yes it hasn’t rained for a long

问题补充：

—The land in the southwest of China is in great need of.

—Yes, it hasn’t rained for a long time there.

A、people B、food C、water

答案：

解析：根据句意：在中国的西南部急需要水。是的，在那儿已经很长时间没有下雨了。故选C.