问题详情：
— How is the smog control going on in our capital city?
—It oouldn't be worse. You believe Beijing upgraded the smog alert from yellow to orange and then red again yesterday.
n't n't ldn't 't
【回答】
D
知识点：虚拟语气与情态动词
题型：选择题
相关文章
![—Howisthesmogcontrolgoingoninourcapitalcity?—Itcouldn’...]( "—Howisthesmogcontrolgoingoninourcapitalcity?—Itcouldn’...")
—Howisthesmogcontrolgoingoninourcapitalcity?—Itcouldn’...![—We’redoingalottoprotectourenvironment(环境),butitisnotgo...]( "—We’redoingalottoprotectourenvironment(环境),butitisnotgo...")
—We’redoingalottoprotectourenvironment(环境),butitisnotgo...![—Whatdoyouthinkofthe14thGuangdongProvincialGames?—Ithin...]( "—Whatdoyouthinkofthe14thGuangdongProvincialGames?—Ithin...")
—Whatdoyouthinkofthe14thGuangdongProvincialGames?—Ithin...![单项选择—WhencanIgoouttoplay？ —Finishyourhomeworkfirst,orI]( "单项选择—WhencanIgoouttoplay？ —Finishyourhomeworkfirst,orI")
单项选择—WhencanIgoouttoplay？ —Finishyourhomeworkfirst,orI![—Mum,canIgoouttoplaywithmyfriendstonight?—OK,butyou]( "—Mum,canIgoouttoplaywithmyfriendstonight?—OK,butyou")
—Mum,canIgoouttoplaywithmyfriendstonight?—OK,butyou![选择填空——Whichdoyoulikebetter,watchingTVorlisteningtomusic...]( "选择填空——Whichdoyoulikebetter,watchingTVorlisteningtomusic...")
选择填空——Whichdoyoulikebetter,watchingTVorlisteningtomusic...![—Lindaisnotcomingforthepartytonight.—Butshe]( "—Lindaisnotcomingforthepartytonight.—Butshe")
—Lindaisnotcomingforthepartytonight.—Butshe![—Howisyourprojectcomingalong? —I]( "—Howisyourprojectcomingalong? —I")
—Howisyourprojectcomingalong? —I
