Question

So _____ that modern industry cannot develop without it.

A．electricity is important	B．important is electricity
C．electricity important is	D．important electricity is

Answer 1

B

考查全部倒装。so...that句型中，当so位于句首时，应该用全部倒装。即把谓语提到主语前。排除C、D；so后紧接形容词，排除A。故选B。