21. —I’m going to Betty’s birthday party. Bye-bye, Mom.
—_____, baby.
A. Best wishes B. Have fun C. Take care D. No problem
22. My parents said to me , “Don’t throw waste paper about.”
---- My parents told me _________.
A. don’t throw waste paper about B. do throw waste paper about
C. not to throw waste paper about D. you shouldn’t throw waste paper about
