Have you seen my dog? I for it and still haven’t found it.
A. looked
B. was looking
C. have been looking
D. had been looking
网友回答
A. looked
B. was looking
(答案→)C. have been looking
D. had been looking
解析：考查时态，句意：你看见我的狗了吗？——我一直在找它，并且还没有找到。结合语境可知前文描述的过去一直在进行并将继续进行下去的动作，故用过去完成进行时态，选C。