The two students had a lot of discussion over the question.A. with the same ageB. as oldC

问题补充：

The two students had a lot of discussion over the question.

A. with the same age

B. as old

C. of an age

D. aged the same.

答案：

A. with the same age

B. as old

(答案→)C. of an age

D. aged the same.

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