it is human activities on the earth that are to( ) global warming.

问题描述:

it is human activities on the earth that are to( ) global warming.
A be blame for B to blame for Ctake charge of Dbe responsible with

应该是C吧.排除B和D.be blame for好像是被动语态.D应该是for才对,而不是with.仅供参考,好几年了,记不大清楚了.