（ ）21. --What’s the matter with Kangkang. --He has flu .
A. a B. the C. an
（ ）22 . Staying up late______ your health .
A. are bad for B. is bad for C. is good for
（ ）23. We had a school sports meet last month. Tom took part in the ______race
A. boys’ 1000-meter B. boy’s 1000-meter C. boys’ 1000 meter
（ ）24. --You look ______.Why?
--Because I saw an ______film just now. It is fun.
A. excite; exciting B. exciting; excited C. excited; exciting
