请选择ABCD'C*]*d9A6T6O.T't8~7o0s4oUnless it___________ , we’ll visit Shanghai Wild Animal Park this weekend.;l4a7[2l:n1N/b
A. rains;l4a7[2l:n1N/b
B. will rain;l4a7[2l:n1N/b
C. hasn’t rained;l4a7[2l:n1N/b
D. is raining;l4a7[2l:n1N/b