---Did you have _______fun in Australia?
--- Sure. It was ___________ unforgettable experience.
A.a; an | B.不填;the | C.the; an | D.不填; an |
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---Did you have _______fun in Australia?
--- Sure. It was ___________ unforgettable experience.
A.a; an | B.不填;the | C.the; an | D.不填; an |