[练习题]WORD FORMATION Complete each of the following sentences with the proper form of the word in brackets.（cost）This sort of scandal in international banking has been politically.
正确答案：costly
题目解析
本题考查常见名词的形容词形式。 空缺处前为has been + 副词politically，故空缺处应填形容词作表语。cost是名词意为“代价、费用”，其形容词形式是costly意为“代价大的、昂贵的”，符合题意。 句意：国际银行业的这种丑闻一直以来都会造成极其恶劣的政治影响。
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