andy has _____ for five years .five years ________ a long ti

andy has _____ for five years .five years ________ a long time .
A.come back home ; is B.come back home ; are C.been at home ; is D.been at home ; are

选C.
for five years是很长的时间,所以要用延续性动词 be. come是短暂性动词,排除come
第二个空,five years 是5年,表示数量单位的词做主语,谓语动词用单数.所以是is