WHAT ___________ NAUGHTY BOY!A. A B. AN C. IS D. ARE

14. - 500 CAU TRAC NGHIEM THI VAO LOP 6 MON TIENG ANH
500 CAU TRAC NGHIEM THI VAO LOP 6 MON TIENG ANH

14.What ___________ naughty boy!

A. a B. an C. is D. are