Prep SC

There are hopeful signs that we are shifting away from our heavy
reliance on fossil fuels: more than ten times as much energy is generated through wind power now than it was in 1990.

B. generated through wind power now as it was

C. generated through wind power now as was the case

D. now generated through wind power as it was

E. now generated through wind power than was the case

it 不能指代energe来的

这里的the case指代整个产生energe的方式 所以一定要用the case而不是任何一个代词。

在prep里面有2-3个的现象，如果主语或者指代对象是一个复杂事件，要用the case，还有一种就是用thus。