At the time of economic crisis, he could only earn a______of $2,000 per month.
【正确答案】 C
【答案解析】wage:工钱,报酬,常用复数形式,常按周或按天发放,多指体力劳动的报酬;pay:工资,薪水,是普通用语;salary:薪水,薪金,常是按月发放的;fee:小费,报酬,还可用来指为取得某种特权而付的费用(如手续费、入场费等)。根据句意可知,选C。