Is there anything wrong , Bob ? You look sad .
Oh ,nothing much . In fact , I of my friends back home .
A. have just thought
B. was just thinking
C. would just think
D. will be just thinking
网友回答
A. have just thought
(答案→)B. was just thinking
C. would just think
D. will be just thinking
解析：句意：--出了什么问题了，鲍勃？你看起来很难过。--哦，没什么。事实上，我在想国内的朋友。根据句意，第二个人刚刚是正在想一个朋友，用过去进行时，选B。