In 1620,about half the USA__forest.In 1620,about half the USA__fo_英语解答

In 1620,about half the USA__forest.
In 1620,about half the USA__forest.
A.was covered B.was covered by
C.were filled with D.covered with
如果D选项是be covered with呢

人气：334 ℃　时间：2020-04-04 16:42:26

解答

B
A 加个with
C 表示空间不表示平面
D 缺少谓语