问题
选择题
All his friends’ encouragement _____ his confidence in winning the game.
A．added up to
B．added up
C．added to
D．added
答案
答案：C
考查短语辨析。added up to 总计为，added up 加起来，added to 增加，句意：所有他朋友的鼓励增加了他赢得比赛的信心。所以选C。
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