请选择ABC*k/_/S5A(i There a pond before.1X*g'q6l(S6O(R*o8l3E)j/z6x'd;u
A. isn’t1X*g'q6l(S6O(R*o8l3E)j/z6x'd;u
B. weren’t1X*g'q6l(S6O(R*o8l3E)j/z6x'd;u
C. wasn’t1X*g'q6l(S6O(R*o8l3E)j/z6x'd;u