Ten minutes ________ an hour when one is waiting for a phone cal

Ten minutes ________ an hour when one is waiting for a phone call.
A、seemed
B、seem
C、is seeming
D、seems
【正确答案】：D
【题目解析】：复数名词或短语表示时间、价格、数字、度量衡等时,它们表示单一的概念,其谓语动词用单数形式.