--What’s the matter, Sara? You wear a sad look on your face.--Oh, nothing much.

--What’s the matter, Sara? You wear a sad look on your face.

--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

试题答案

C