— makes her different from the other students?—Diligence I think.A. How is it thatB. How

问题补充：

— makes her different from the other students?

—Diligence, I think.

A. How is it that

B. How is that

C. What is it that

D. What is that

答案：

A. How is it that

B. How is that

(答案→)C. What is it that

D. What is that

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