---I’m frustrated after so many failures. I can’t see any hope.---Behind every misfortune

问题补充：

---I’m frustrated after so many failures. I can’t see any hope.

---Behind every misfortune !

A. lies an opportunity

B. does an opportunity lie

C. an opportunity lies

D. is an opportunity lying

答案：

(答案→)A. lies an opportunity

B. does an opportunity lie

C. an opportunity lies

D. is an opportunity lying

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