He goes to work 8:00 the weekend . A. in inB. at inC. at onD. on on

问题补充：

He goes to work 8:00 the weekend .

A. in, in

B. at, in

C. at, on

D. on, on

答案：

A. in, in

B. at, in

(答案→)C. at, on

D. on, on

解析：句意：他在周末8点去上班。在几点钟，用介词at，在周末，星期几，用介词on.故选C