—What’s the matter,Ann?You look sad.—Oh,nothing much.As a matter of fact,Iof my friend bac

—What’s the matter,Ann?You look sad.
—Oh,nothing much.As a matter of fact,I of my friend back home.
A. think
B. have just thought
C. had just thought
D. was just thinking

A. thinkB. have just thoughtC. had just thought(答案→)D. was just thinking解析：本题考查动词过去时态。其语境意思是:“怎么了？安娜，你看起来有点儿忧伤。”“噢，没什么。事实上，我（刚才）只是在想念我家乡的友人。”答语中“Oh,nothing much.”暗示安娜已从思绪中返回现实，刚才回忆的过程应该用与过去有关的时态来表达，所以D项为正确答案。

感谢回答，我学习了