—Look at the clouds in summer twilight (黄昏)! They are so beautiful.
—Yeah. The beauty _______ ten minutes.
A.lasted B.lasts C.has lasted D.will last
While my mother ________ some shopping yesterday, she happened to meet an old friend of hers.
A.did B.was doing C.would do D.had done
As I'm busy with my assignment, you __________ have your private time in your own room.
A.must B.can C.need D.should
We believe we are ___________ what we do, no matter how we feel.
A.unaware of B.sorry for C.independent on D.responsible for
My aunt doesn't care about me any more, and she_________ calls me.
A.almost B.exactly C.hardly D.nearly
More and more people choose the style of a low-carbon life and the air is getting much________ than before in Shanghai.
A.worse B.greener C.cleaner D.warmer
