A: What’s the matter, Sara? You wear a sad look on your face.
B: Oh, nothing much. As a matter of fact, I of my friends back home.
A. just thought
B. have just been thinking
C. was just thinking
D. have just thought
网友回答
A. just thought
B. have just been thinking
(答案→)C. was just thinking
D. have just thought
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