急用.Two thirds of this area _______covered with forest,in whict

急用.Two thirds of this area _______covered with forest,in whict
急用.Two thirds of this area _______covered with forest,in whict

急用.Two thirds of this area _______covered with forest,in whict
这片区域的三分之二都被森林覆盖,is

大概就是说这个面积的三分之二都覆盖着森林吧

are 。thirds决定的

这个区域的三分之二被草原覆盖

are
根据Two thirds of，所以谓语动词用复数。
be covered with 是被什么覆盖，被动...

was

is？

森林覆盖着 2 分之 3 的这片地区

这片区域的三分之二都被森林覆盖着。

was