—How long have you been here? — the end of last yearA. SinceB. AtC. ByD. In

问题补充：

—How long have you been here?

— the end of last year．

A. Since

B. At

C. By

D. In

答案：

(答案→)A. Since

B. At

C. By

D. In

解析：可联系答.案.网客服索取。