Wemustdoeverythingwecan
问题详情:
We must do everything we can _______ waste water from running into rivers.
A、keep B、kept C、to keep D、keeping
【回答】
C
知识点:动词和动词短语
题型:选择题
问题详情:
We must do everything we can _______ waste water from running into rivers.
A、keep B、kept C、to keep D、keeping
【回答】
C
知识点:动词和动词短语
题型:选择题