Echo for half a month. She’ll come back in two months.A. leftB. leavesC. has leftD. has be

问题补充：

Echo for half a month. She’ll come back in two months.

A. left

B. leaves

C. has left

D. has been away

答案：

A. left

B. leaves

C. has left

(答案→)D. has been away

解析：因为本句的时间状语，为for +一段时间，此时要求动词为延续性动词，只有D，表示已经离开了！故选，且相当于延续性动词，故选答案为D