He is always helping people without expecting anything________.

A. in charge             B. in turn        C. in trouble       D. in return

He is always helping people without expecting anything _______. 

A. in turn                B. in charge            C. in return            D. in trouble

He is always helping people without expecting anything _______. 

A. in turn              B. in charge            C. in return            D. in trouble

He is always helping people without expecting anything ________.

A. in charge　　 B. in turn　　　　　

C. in trouble　　 D. in return

He is always helping people without expecting anything________.

A．in charge          B．in turn            C．in trouble         D．in return