学员疑问:老师,这个题为什么选D?
She was complaining that the doctor was ______ too much for the treatment he was giving her.
A. expending B. offering C. costing D. charging
老师解答: 由句中关键词“She was complaining她抱怨”与“the treatment治疗”的对应,可知构成固定搭配“charge for sth. 向……收费”的D项正确。
点评分析: 词汇题做的时候,要根据空格前面的词推测空格处单词的词性以及习惯性用法。