The company ______ its sales by an average of 10% per year since its establishment in 1993.

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问题 The company ______ its sales by an average of 10% per year since its establishment in 1993.

选项 A、increases
B、increased
C、is increasing
D、has increased

答案D

解析根据句意和时间状语since its establishment in 1993(自1993年成立以来)可知，本句应用现在完成时，即谓语动词用“have／has+过去分词”的形式，表示动作从过去一直持续到现在，并有可能持续下去。故选D。

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英语

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