In 1620,about half the USA was covered by forests.此句子对吗?将by换成with行吗?我看到别处有用with的.可是be covered with 与be covered by不能通用,有点晕.

In 1620,forests c __ an area of about half the USA,and in 1850,only about a third she walks in the garden f--- about half an hour. We( )school at about half past four in the afternoon. in supermarket,the——of meat is about 11 yuan half a half.(首字母填空) 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 In 1620,about half the USA__forest.A.was covered B.was covered by C.were filled with D.covered with My name is Ted Pike.I am a worker in a big shop.I don't work in the morning.I only work at night.Every morning I come home at about half past six.I have breakfast at seven.After breakfast I go to bed.I get up at about half past two.I have lunch at th 英语翻译In 1620，about half the USA was covered by forests.Today the forests have almost gone.A lot of good land has gone with them，leaving only sand.China doesn't want to copy the USA's example.We're planting more and more trees.We've built t In 1620,about half of the USA___covered by forest A:are B:is C:were D:was 选几?急答! Miss Gao runs with her dog in the park for about half an hour .(对for about half an hour 提问） 英语翻译In 1620,about half the USA was covered by forests． Today the forests have almost gone． A lot of good land has gone with them,leaving only sand． China doesn't want to copy the USA's example． We're planting more and more trees． We 谁给这篇英语短文取个题目In 1620,about half the USA was covered by forests． Today the forests have almost gone． A lot of good land has gone with them,leaving only sand． China doesn't want to copy the USA's example． We're planting m In 1620,about half the U.S.A.was covered by forests.Today the forests have almost gone.A lot of good land has gone with them,leaving only sand.China doesn’t want to copy the U.S.A.’s example.We’re planting more and more trees.We’ve built the It is said that about half of the people in Chana.翻译 I watch TV about half an hour 选for on at in 哪一个 every day it---me about half an hour to get there.at?to?in?from? I have listened to BBC for about half a year,but my listeningcomprehension hasn't improved very much.I am puzzled bythe slowness,I want to quicked the pace,can you suggestsome quicker ways to enhance it?Thanks in advance. 英语翻译On October 1,1908,the Ford Motor Company introduced the Model T.It was an instant hit.the car came only in black.But at $850,it cost about half as much as other cars on thr market.By 1918,half of all the cars in the United States were Mod