Question

Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.

A．has just left

B．had just left

C．just left

D．was just leaving

Answer 1

D

从“我们只谈了几句话”可知，当我们去拜访时，Professor Smith“正要”离开了，D是过去进行时表示过去将来意义。