—Jack how did itthat you made so many mistakes in your homework? —I myself haven’t figure

问题补充：

—Jack, how did itthat you made so many mistakes in your homework?

—I myself haven’t figured it out yet!

A. come about

B. bring about

C. turn down

D. get down

答案：

(答案→)A. come about

B. bring about

C. turn down

D. get down

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