Unfortunately when I arrived Mary so we only had time for a few words.A. was just leav

问题补充：

Unfortunately, when I arrived, Mary , so we only had time for a few words.

A. was just leaving

B. just left

C. has just left

D. had just left

答案：

(答案→)A. was just leaving

B. just left

C. has just left

D. had just left

解析：考查时态。句意：不幸的是，当我们到达时，玛丽正要离开，因此我们只有时间说几句话。Leave等的现在进行时态可以表示将要进行的动作，故选A。