单项选择题

Two substitutes were used during the basketball games.

A. players
B. centers
C. referees
D. replacements
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A series of border incidents inevitably led the two countries to war.
A. distinctly
B. unavoidably
C. regularly
D. actually
单项选择题
Consumer groups are protesting against higher prices in this city now.（）

A. clothing with
B. clinging to
C. complaining about
D. clutching with
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