问题

This is one of the means ______ the electricity energy is conducted from one place to another.[ ]

A: by which
B: by that
C: what
D: which

正确答案是：

同类题型

training center, we create an enjoyable English language . One can feel as if he is studying in an English-speaking country.

I’m very tired these days because of hard work.—Why not ______music It can make you ______

They were making a plan to help those students _____, which attracted me

We wonder if our teachers_________ to our graduating party next weekend. If they ________,we’ll be very happy.

The police have issued a detailed______ofthe missing boy．