—The population of the world still now.—So it is.A. are; growing B. will; grow C. is; gr

问题补充：

—The population of the world still now.

—So it is.

A. are; growing B. will; grow C. is; growing

答案：

解析：句意：现在世界的人口数量仍然在增长。句中The population作为主语时，谓语动词必须用单数，同时句中有时间状语now，所以用现在进行时态。故选C