The audience _______ as they waited for the comedian to come on the stage.
| A．fell silence | B．fell silent |
| C．fall silently | D．feel silent |
Though in a big city，the college student was more interested in village life.
| A．raised | B．grown | C．developed | D．set |
— How did they get to know each other?
—The Chinese skier made the of the Canadian player at 2014 Sochi Winter Olympic Games.
| A．acquaintance | B．achievement | C．decision | D．investigation |
In order to reduce air pollution, many people want a total _____on the playing of firecrackers (鞭炮)in many cities during the Spring Festival.
| A．presentation | B．promotion | C． prohibition | D．performance |
The thought of going back home was _______ kept him happy while he was working abroad.
| A．that | B．all that | C．all what | D．which |
Although medical science __________ control over several diseases,what worries us is that some of them are returning.
| A．achieved | B．has achieved | C．will achieve | D．had achieved |