－ How long home?－For about three months.A. have you been away fromB. did you leaveC. have

问题补充：

－ How long home?

－For about three months.

A. have you been away from

B. did you leave

C. have you left

D. are you away from

答案：

(答案→)A. have you been away from

B. did you leave

C. have you left

D. are you away from

解析：考查现在完成时。“你离开家多久了？”“大约三个月了。”动作发生在过去，对现在造成的影响，用现在完成时，完成时常与一段时间连用。Leave是短暂性动词，不能与一段时间连用，应该转换为be away。故选A。