11、 __________ that my head had cleared，my brain was also beginning to work much better．
A．For
B．Now
C．Since
D．Despite


12、 Washington，a state in the united States，was named__________one of the greatest American presidents．
A．in honour of
B．in consistency with
C．in accordance
D．by means of


13、Our manager is__________ an important customer now and he will be back this after-noon．
A．calling on
B．calling in
C．calling up
D．calling for


14、 I am not__________ beautiful dreams．1 want beautiful realities．
A．content to
B．content with
C．content of
D．content at


15、 With the flowers__________ everywhere．the park looks beautiful．
A．to bloom
B．blooming
C．be blooming
D．to be blooming


16、 Very few scientists__________ with completely new answers to the world’s problems．
A．come to
B．come round
C．come up
D．come in


17、I knew I could not finish my homework__________ ．
A．by he had come
B．until he came
C．when he comes
D．before he comes


18、 This new instrument is far superior__________ the old one we bought three years ago．
A．than
B．to
C．over
D．of


19、 I waited for him half an hour，but he never __________．
A．tumed in
B．turned down
C．turned off
D．turned up


20、 My niece has been to Sumatra and Iran as well as all of Europe．By the time she’s twenty，she__________ almost everywhe．re．
A．will be
B．would have been
C．will have been
D．would be