In order to find the missing child, the villagers___________ all they can in the past five hours.
| A．have been doing | B．did | C．do | D．had done |
Obama, _____ president of the USA, won _____ Nobel Prize for Pease in 2009.
| A．\; a | B．a; the | C．\; the | D．the; a |
Women’s earnings are well below men’s _____ educational difference that are decreasing between the two sexes.
| A．in favor of | B．in case of | C．in terms of | D．in spite of |
---How much salt did you put in the soup?
---I’m sorry to say, _____. I forgot.
| A．none | B．not a bit | C．nothing | D．no |
Despite the fact that Lucy is a lovely girl, she _____ be extremely difficult to work with sometimes.
| A．must | B．should | C．would | D．can |
Environmental groups intend to _____ the pressure until the government changes the law.
| A．keep up | B．make up | C．pick up | D．bring up |