________ who are able to work through the struggle are the ________ who are going to be successful.
A.Someone; one B.Anyone; one
C.He; ones D.Those; ones
D
【解析】
考查定语从句和代词。句意:那些努力工作的人是那些能够成功的人。第一空根据后面定语从句中的系动词are判断先行词是复数,故只能用those;第二空同样根据后面定语从句中的系动词are判断先行词是复数,故选D。