.. Though he graduated from a famous university he was failure as teacher.A. a; aB. 不填;

问题补充：

.

. Though he graduated from a famous university, he was failure as teacher.

A. a; a

B. 不填; a

C. 不填; the

D. 不填

答案：

(答案→)A. a; a

B. 不填; a

C. 不填; the

D. 不填

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