You can either sing dance weekends.A. and onB. or onC. and atD. or in

问题补充：

You can either sing dance weekends.

A. and, on

B. or, on

C. and, at

D. or, in

答案：

A. and, on

(答案→)B. or, on

C. and, at

D. or, in

解析：句意：在周末，你可以唱歌或者跳舞。either…or或者，或者，固定句型，on weekends在周末，固定短语，故选B