Tom was a black slave and he at last the cotton farm to join the North Army.A. leftB. esc

问题补充：

Tom was a black slave and he at last the cotton farm to join the North Army.

A. left

B. escaped

C. ran away

D. fled

答案：

A. left

B. escaped

C. ran away

(答案→)D. fled

解析：作为奴隶只能逃跑，排除leave；escape 和run away 都是不及物动词。