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1.We all proposed the new type of machine _______ put into use as soon as possible.
A. be referred to
B. referred to being
C. was referred to
ed to be

2.Perhaps the most significant postwar trend was the decentralization of cities throughout the Unite States, _______ when massive highway-building programs permitted greater suburban growth.
accelerated a phenomenon
B. a phenomenon that accerlated
C. accerlating a phenomenon which
D. the accerlation of which phenomenon

3. "How did the group improve its discussion?""They all took part, each member _______ the responsibility of leading one meeting.
A. having
B. to have
C. has had
D. had

4.The president promised to keep all the board members _______ of how the negotiations were going on.
ed
B. inform
C. be informed
ing

5.The hours ______ the children spend in their one-way relationship with television people undoubtedly affect their relationships with real-life people.
which
which

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