The manager was concerned to hear that two of his trusted workers .
A. will leave
B. are leaving
C. have left
D. were leaving
网友回答
A. will leave
B. are leaving
C. have left
(答案→)D. were leaving
解析：考查动词时态。此处用过去进行时表示过去将来时。这里were leaving表示：过去要离开。句意：听到自己最信任的两个职员要离去，经理很关注。