There are twenty buildings all ______the same size in this neighbourhood.A.in B.of C.with D.for 我选的是A,但答案是B,请各位帮忙解答一下,谢谢!!!!2楼和3楼的高手,请恕我愚笨,我不太明白,of后面有名词吗?是哪个啊?