——How long have you been going to in Tanggou Senior Middle School？——More than two years.——

问题补充：

——How long have you been going to in Tanggou Senior Middle School？

——More than two years.

——So it will be less than one year you graduate from this school.

A. when

B. that

C. before

D. since

答案：

A. when

B. that

(答案→)C. before

D. since

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