(unite)  A__________ effort is always more effective than an isolated complaint.
(unite)  A__________ effort is always more effective than an isolated complaint.
【正确答案】:united
【题目解析】:构词知识题。空格处前面是冠词a,后面是名词effort,显然空格处要填一个形容词。unite是动词,变为形容词需要采用分词形式,因此正确答案是united,表示“团结的;一致的”。
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