请选择CBA8L6q;S.s*n;f:T9z+u _______your books on the desk ?/S3s+z3J:}9t2E1M;@
A. Is there/S3s+z3J:}9t2E1M;@
B. Are/S3s+z3J:}9t2E1M;@
C. Are there/S3s+z3J:}9t2E1M;@