(2013·河北普通高中高三质量监测)Sitting at the corner of the meeting room, he looked sad because there were so many problems ________.
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A
remaining to settle
B
remained settling
C
remaining to be settled
D
remained to be settled
推荐题目
 The new library, ______ last week, is very popular _____ the students. 
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A
opening, to
B
opened, with
C
open, to
D
having been opened, among
However frequently       , the works of Shakespeare always attract many people.
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A
performed
B
performing
C
being performed
D
to be performed
There are five chairs ___ ,but I am at a loss which to buy .
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A
to be chosen
B
to choose from
C
to choose
D
to be chosen from