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Jumping out of _________ airplane at ten thousand feet is quite _________ exciting experience.

A.不填; the　 B.不填; an

C. an; an D. the; the

Jumping out of ____ airplane at ten thousand feet is quite ____ exciting experience.

A.不填; the      B.不填; an

C. an; an        D. the; the

Jumping out of _______airplane at ten thousand feet is quite _____exciting experience.

A. 不填; the　　   B. 不填; an

C. an; an　　　　   D. the; the