单项选择题

Our department has a large collection of books, ______ are in English.

A．many of which
B．many of them
C．many ones
D．their many
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单项选择题
— Excuse me, could you please have my computer ______ — Of course.
A．repair
B．repairing
C．repaired
D．be repaired
单项选择题
______ we can't get the necessary financial support, what shall we do
A．Since
B．Supposing
C．As long as
D．In case
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