A be covered with B

A be covered with B 是 cover A with B 还是 A be covered with B 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 The mount will ___ trees in a few year.A be covered with B:be covered by 有什么区别选哪个,为什么 一道纠结的英语选择题,Yeaterday it snowed.Now the roads（ ） still（ ） snow.A、be ,covered with B、 were,covered withC、 are ,covered with D、are ,covering with到底是选C还是D,为什么? In 1620,about half the USA__forest.A.was covered B.was covered by C.were filled with D.covered with 用be covered with造句 They___the desk___a piece of paper.A cover,to B covered,to C covered,with D covered,on be covered in 和be covered with 有什么区别? be covered with 与 be covered by 有什么不同? be covered with 与be covered by的区别是什么? be covered with .be covered by 的区别? be covered with和be covered by有什么区别? be covered with 和 be covered under 有什么区别? Three fourths of the land____ with trees.A.are covered B.is covered 选那一个 There were books everywhere____dirt.A were covered by B covering with C which covered with D covered with为什么不选C项呢？ The boy lay there with his head---with a newspaper.A.covered B.covering C.being covered D.to cover In()time,those moutains will be covered with trees.A.few years B.a few years' C.a few yearD.a few year's为什么要选B?