请选择CBA;S9[(Q*_.N7X.z2y*E+K8{,z9FThe ducks are swimming the water.:c)@3h-q.V1c7j,W5D/]
A.in:c)@3h-q.V1c7j,W5D/]
B. on:c)@3h-q.V1c7j,W5D/]
C.under:c)@3h-q.V1c7j,W5D/]