The earth is our home. We must ______ th
题型:选择题
问题:
The earth is our home. We must ______ the land, air and water clean. [ ]
A. get
B. let
C. keep
D. take
The earth is our home. We must ______ the land, air and water clean. [ ]
A. get
B. let
C. keep
D. take