William was pleased to see the executives respond so ______ to the proposal he had been working on.
A、
frustratingly
B、
enthusiastically
C、
simply
D、
indifferently
【正确答案】
B
【答案解析】
William很高兴看到行政官员们的反应，因此修饰respond的空格处需填入带有正面意义的副词。
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