Nowadayscertainlimitshouldbese-优题课

Nowadays certain limit should be set on use of cars to reduce air pollution.

A．/; the

B．a; the

C．the; /

D．the; the

科目英语题型单选题难度中等

知识点：冠词的用法辨析

I________have gone the concert because I know nothing about that kind of music.

．—Why are the housing prices in big cities going up all the time?
—One reason is that people are________into overcrowded cities in great numbers.

John is________ than wise. Sometimes he just can’t do things very well.

—Would you please help me fix my computer?
— ________ .

Mother was so angry at all ______ I was doing _______ she walked out.