请选择DCBA+d-U8x(n7x9j0n There _________ a ruler and some pencils in the pencil-box.'H(](O5?(`5m
A. be'H(](O5?(`5m
B. is'H(](O5?(`5m
C. are'H(](O5?(`5m
D. has'H(](O5?(`5m