21. There isart room and a ball in the building.
A. a B. an C. the D. /
22. ---the girls happy?
---No,.
A. Are; they aren’t B. Are; they are C. Are; there aren’t D. Are; there are
23. ---Can I watch TV now?
---No, you.
A. can B. can’t C. aren’t D. are
24. ---When is Tom’s birthday?
----birthday is on May 6th.
A. My B. Your C. His D. Her