51、 No sooner had I closed the door than somebody started knocking_________it.
A．on
B．with
C．to
D．for


52、 There are four departments at this college,________ more than five hundred students.
A．with each have
B．each having
C．each of them have
D．with each is having


53、 I' d rather have a room of my own, however small it is, than_________a room with someone else.
A．share
B．to share
C．sharing
D．to have shared


54、 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


55、Do you know why John didn' t_________ at the party yesterday evening?
A．show off
B．show down
C．show up
D．show in

56、 My brother' s plans are very_________ ; he wants to master English, French and Spanish before he is sixteen.
A．arbitrary
B．aggressive
C．ambitious
D．abundant


57、 Mr．Holmes called at many schools______ he lived to ask them to accept his son，but he wasrefused everywhere for being a black．
A．that
B．around where
C．near which
D．which


58、 When she heard the bad news, she_________completely.
A．broke away
B．broke up
C．broke down
D．broke out


59、 The novel ended happily，and the young couple was married______
A．in the final
B．in the end
C．to the last
D．in conclusion


60、
Do you think they have_________food for all these people here?
A．subsequent
B．beneficial
C．sufficient
D．average