I often go swimming with my fatherSunday.A. inB. onC. atD. of

问题补充：

I often go swimming with my fatherSunday.

A. in

B. on

C. at

D. of

答案：

A. in

(答案→)B. on

C. at

D. of

解析：在星期前面应该用介词on，in一般用于一段时间，on用于天的前面，at与时间点连用，所以本题应该选择B。