这是一个It is .that.句型.
所以C是对的.
去掉不重要的部分,句子主干是:
It's the book Harry Porter _that_ attracts quite a few readers throughout the world.
这是一个It is .that.句型.
所以C是对的.
去掉不重要的部分,句子主干是:
It's the book Harry Porter _that_ attracts quite a few readers throughout the world.