Father for London on business upon my arrival, so I didn’t see him.
A. has left
B. left
C. was leaving
D. had left
网友回答
A. has left
B. left
C. was leaving
(答案→)D. had left
解析：句意：我一到父亲就离开去伦敦出差了，所以我没见到他。在我到达之前父亲离开，过去的动作之前发生的动作应该用过去完成时。故选D。
考点: 考查动词时态的用法。