The police tried in vain to break up the protest crowds in front of the government building.

admin2005-07-06  56

问题 The police tried in vain to break up the protest crowds in front of the government building.

选项 A、unskillfully
B、violently
C、ineffectively
D、eventually

答案C

解析 in vain是词组,意为“白费”,所以选ineffectively“无效地”。
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