从A、B、C、D四个选项中，选出可以填入空白处的最佳答案。

(    )21.It’s ______ unusual thing for _____ eight-year-old girl to find _____ UFO.

A. a, a, a    B. an, a, an    C. a, an, an    D. an, an, a

(    )22. ----What would you like to eat?

        -----I’m very hungry. _______ you can get. Just get it now.

A. Anything     B. Something    C. Nothing     D. Other things

(    )23.----_________ fresh air!      -----Yes. Let’s go for a walk.

A. How   B. What a    C. What     D. How a

(    )24. ----May I play outside now, mum?  

  ----- No, you _______. You ________ do your homework first.

A. may not; can   B. can’t; may   C. may not; may   D. can’t; must

(    )25. -----Is this ______ bike?      ----- No. It isn’t _______. It’s _______.

A. your; mine; her   B. yours; my; his   C. yours; my; his   D. your; mine; his

(    )26.________ young people went to the theatre to watch the _________ play.

A. Thousand of; 130 minutes         B. Thousands of; 130-minutes

C. Thousands of; 130-minute         D. Thousand of; 130-minute

(    )27. Mary is looking forward to _______ from me, please remember _____ this letter on your way to school.

A. hear; send   B. hearing; sending  C. hearing; to send   D. hear; sending