11、 He never arrives on time and my __________ is that he feels the meetings are useless．
A．preference
B．conference
C．inference
D．reference


12、 The news has just__________that the president is going to visit China next month．
A．come down
B．come up 
C．come out
D．come about


13、 The__________ at the military academy is so rigid that students can hardly bear it．
A．convention
B．confinement
C．principle
D．discipline


14、 Mrs． Morris's daughter is pretty and __________, and many girls envy her．
A．slender
B．light 
C．faint
D．minor


15、 Last night he saw two dark __________ enter the building, and then there was the explosion．
A．features
B．figures
C．sketches
D．images


16、 I must congratulate you __________ the excellent design of the new bridge．
A．with
B．of
C．at
D．on


17、 The lecture which lasted about three hours was so __________ that the audience couldn't help yawning．
A．tedious
B．bored 
C．clumsy
D．tired

18、 At yesterday's party, Elizabeth's boyfriend amused us by__________Charlie Chaplin．
A．copying
B．following
C．imitating
D．modeling


19、 This is not an economical way to get more water; __________, it is very expensive．
A．on the other hand
B．on the contrary
C．in short 
D．or else


20、 Mrs． Gmith was so __________ about everything that no servants could please her．
A．specific
B．special
C．precise
D．particular

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