If you______your influence, they may change their decision.
【正确答案】
B
【答案解析】本题是说如果你施加影响,他们可能会改变决定。B项exert“发挥,运用”符合题意,如:That council member has been exerting a lot of pressure on the company toaccept the raw material of low quality.(那个市议员一直在对这个公司施加很大的压力,要他们接受这批劣质原料。)其他三项compel“强迫”,expose“揭露,使曝光”,vary“变化”都不正确。