People (?) a general understanding of the water problem(A) are in lack (B) lack of (C) lack (D) are lacking of 选那个,急

分类: 作业答案 • 2021-12-20 03:18:53

问题描述：

People (?) a general understanding of the water problem
(A) are in lack
(B) lack of
(C) lack
(D) are lacking of
选那个,急

答