--I’ m going to swim with my father in the river this weekend..A. Good luckB. Have funC

问题补充：

--I’ m going to swim with my father in the river this weekend.

--.

A. Good luck

B. Have fun

C. That’s all right

D. Congratulations.

答案：

A. Good luck

(答案→)B. Have fun

C. That’s all right

D. Congratulations.

解析：考查交际用语：A. Good luck祝好运，B. Have fun玩的愉快，C. That’s all right没关系，D. Congratulations.祝贺，句意：--这个周末我要和爸爸去河里游泳。--玩的愉快。选B。