请选择ABC9n1[8n(q7s*E5y-D There are many ____ in the zoo.)E(q9?7z1z6e)l8\1s9x
A. a boy)E(q9?7z1z6e)l8\1s9x
B. boy)E(q9?7z1z6e)l8\1s9x
C. boys)E(q9?7z1z6e)l8\1s9x