The thick smog covered the whole city.It was as if a great black blanket ______ over it.A.had been thrown B.were thrownC.be thrown D.had thrown主语说的不是现在的事实吗?不理解为什么要用到过去完成时.

Soon you'll find the road ------(cover) with thick sow.这里应该填什么, with thick snow ( )the ground,our city lwith thick snow ( )the ground,our city looks more beautifula.covers b.covering c.coveredd.to cover求解析过程 In the old days ,in Lodon ,the smog was very thick .Car and bus drivers （1）to drive very slowly .They （2）saw the road in front of them even during the daytime .People did not like going out in the smog .（3）they had to go out ,they wore 英语翻译thick ,do,you ,the,mad,traveller,is?man,the,in,white ,black,much,heavier,is than ,the manthat,is,the,cover,of,book,the,of,best,all in December 1952,a very thick dark cloud came down over londonIn December 1952,a very thick dark cloud came down over London.It was the worst smog (烟雾) Londoners never saw.Much of it was bad factory smoke.Nearly fifty people died in road accident 英语翻译Today ,we are talking about forest fires .I’m Penny Wang ,a reporter ,I am in Indonesia .It is now three o’clock in the afternoon but I can’t see the sky .Thick smog is 26 most of South-East Asia .Thousands of people have eye or bre 英语 根据所给短文回答问题根据所给短文回答问题：In December 1952,a very thick dark cloud came down over the city.It was the worst smog Londoners had ever had.Nearly fifty people died in road accidents.Many more people became ver The thick smog covered the whole city.It was as if a great black blanket ______ over it.A.had been thrown B.were thrownC.be thrown D.had thrown主语说的不是现在的事实吗?不理解为什么要用到过去完成时. in the thick of sh thick thick thick the ,applications,cover,everything The Cover-Up 歌词 keep the cover cover the event cover the conference是什么意思 The ( ) is thin,the( ) is thick.