问题描述:
As far as I know,more than two-thirds of the earth's surface______water.
A.is coverd by B.are coverd with C.are covering D.is covering
有哪位大神知道这该选什么?为什么啊?急!
A.is coverd by B.are coverd with C.are covering D.is covering
有哪位大神知道这该选什么?为什么啊?急!
问题解答:
我来补答展开全文阅读