This is ________ apple. It’s ________ big apple.
A. an, an                    B. a, an                      C. an, a

He can play _______basketball, and he can play _________piano.

Betty is from America, she is______ American girl.

Wang Gang wants to be ________ swimmer but Simon wants to be ________ engineer.

It’s fine today. Let’s play ________ basketball outside.

It is ________ eraser.

---Are you going to Shanghai by       train?---No. I’m taking       car.

There is _____“U”in_____word“UFO”．   
A．an；a         B．a；the           C．an：the

His daughter is _________ girl.

We'll be away for two weeks because we'll have a ___________.