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题型：单选题题类：常考题难易度：普通

It is _______ unusual thing for us to find ________ UFO.

A、a; a B、an; an C、a; an D、an; a

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I want to be _______ football player like Dario Conca who is regarded as______ best player in the Asian Champions League in 2013.

His father bought iPhone 6s for his mother as useful gift yesterday．

Do you think Maths __________ useful subject?

—Many wonderful movies are on the cinemas these days. Have you seen them?

—My family watched ________ movie last night. It's Detective Pikachu.

Greece is _________ European country. It's in south part of Europe.

I buy____ eraser for my little brother every year.

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