( 上海卷29). -- Sorry, Professor Smith. I didn't finish the assignment yesterday.-- Oh, you have done it as yesterday was the deadline.
Nobody can tell _____ the future world will look like.
— I put him down for a well-educated man. —______ ? — I mean that he's a well-educated man.
The silence of the library is sometimes broken by a sudden cough or the sound of pages______.
Wang Pin is an advanced worker in our company. He _______ for four years in Yangzhou University.
When it______ air pollution, Beijing faces the three “C” s-----cars,coal and construction,which lead to Beijing's thick air pollution.