— Mike got “F” in his history test.一 ? He has been working so hard on it. A. How comeB. S

问题补充：

— Mike got “F” in his history test.一 ? He has been working so hard on it.

A. How come

B. So what

C. What for

D. Why not

答案：

(答案→)A. How come

B. So what

C. What for

D. Why not

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