People are the use of alternative energy sources. Because the fossil fuels will be used sooner or later.
A. pushing for/ consumed
B. struggling for /being consumed
C. pushing for/ being consumed
D. preferring /being used
网友回答
A. pushing for/ consumed
B. struggling for /being consumed
(答案→)C. pushing for/ being consumed
D. preferring /being used
解析：
此题意为：人们急切要求使用替代能源。因为正在消耗的矿物燃料早晚有一天就要用完。push for意为“急切、强烈地要求”；而fossil fuels是“消耗consume”的宾语，故应用被动结构。所以此题选C.