问题补充：
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
答案：
A. come back home, is
B. come back home, are
(答案→)C. been at home, is
D. been at home, are
解析：可联系答.案.网客服索取。
