We out by that time that he a thief for a longtime.A. had found had beenB. had found was

问题补充：

We out by that time that he a thief for a longtime.

A. had found, had been

B. had found, was

C. found, had been

D. found, was

答案：

A. had found, had been

B. had found, was

(答案→)C. found, had been

D. found, was

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