Look! Whats in sky?- Oh its UFO. I wish I could fly in space some day.A. the; a

问题补充：

--- Look! Whats in sky?

--- Oh, its UFO. I wish I could fly in space some day.

A. the; an; /

B. /; a; the

C. the; a; /

D. /; an; /

答案：

A. the; an; /

B. /; a; the

C. the; a; /

D. /; an; /

解析：考查冠词。句意：看，天空中那是什么？那是一个UFO，我多么希望有一天能飞向太空。In the sky 在天空中，固定短语；第二个空表示泛指所以用a ；第三个空，space是抽象名词所以不加冠词，故选C项。