She was complaining that the doctor was ______ too much for the treatment he was giving her.
A、
expending
B、
offering
C、
costing
D、
charging
【正确答案】
D
【答案解析】
解析：句意：她抱怨医生对治疗收费过高。charge收费，要价。expend花费。offer出价；提供。cost(使)花费。
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