—According to the weather report, there is likely to be heavy rain tomorrow.—, we’ll have

—According to the weather report, there is likely to be heavy rain tomorrow.
— , we’ll have to change the plan for the outgoing.
A. If so
B. If not
C. Unless so
D. Unless not

(答案→)A. If soB. If notC. Unless soD. Unless not解析：可联系答.案.网客服索取。

这个问题的回答的对