seems, seem, seemed, am, is, are Ten minutes____ an hour when on

seems, seem, seemed, am, is, are
Ten minutes____ an hour when one ____ waiting for a phone call.
【正确答案】：seems;is
【题目解析】：【考点点击本题考查主谓一致。【要点透析】当表示时间、距离、金额等度量的复数名词作主语,把它看作一个整体时,谓语动词一般用单数。one是第三人称单数,谓语动词应用单数。