What a strange man! He loves his wife, but _________ he often beats her．
A.at a timeB.at one timeC.at timesD.at the same time在线课程D
解析：
at the same time“同时”；at a time“一次”；at one time“曾经，一度”。in time“及时；终究”。拓展：例如：I can eat thirty dumplings at a time．我一次能吃三十个饺子。I lived in the country at one time．我曾在乡下住过。He'll succeed in time．他终究会成功。