you may have you should gather your courage to face the challenge.A. However a serious p

问题补充：

you may have, you should gather your courage to face the challenge.

A. However a serious problem

B. What a serious problem

C. However serious a problem

D. What serious a problem

答案：

A. However a serious problem

B. What a serious problem

(答案→)C. However serious a problem

D. What serious a problem

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