( )has been done to prevent the water in the lake from being pollutedA,little B,few C,other D,many

英语翻译：Much has been done to end Beijing. “I never see what has been done ,I only see what remains to be done. can be done has been Everything that can be done has been done 中can be done has been done He has done to beijing 与He has been to beijing 的区别? has been doing have been done区别 has been done,had been done 的区别是什么? what has ___has been done?A been doneB to be done C to doD done句子翻译还有为什么选那个?能不能说明下 为什么。 A lot (has been done)to save the old man's lifeA lot (has been done)to save the old man's life.为什么要这样填 have been done 和 to be done what done has been done has been done?在说说他的结构是什么时态? it has been done 谓语it has been done 这句话done作表语还是been done做谓语? has been done 和has been 区别是什么 Has all_can be done Awhat,done Bthat,been done Cthat,be done Dwhat,already done One never notices what has been done; one can only see what remains to be done.中文意思是什么? 怎么分辨谓语动词和非谓语动词啊?比如,has caused /to be done /having been done/啊什么的? Only recently----to deal with the environmental problems.A something has doneB has something doneC has something been doneD something has been done原因、翻译 have/has been+done 是什么时? Little has been done的翻译