For this case we have the following sentence translated into English: 
 Sonia sotomayor impresses those who work with her for the kind treatment she gives ______. 
 We must find the words to complete the sentence. 
 We can, for example, complete the sentence with the following words: 
 She gives her employees 
 Therefore, the complete sentence in English is: 
 Sonia Sotomayor impresses those who work with her for the kind treatment she gives her employees. 
 The translation of the sentence is Spanish is: 
 Sonia sotomayor impresiona a los que trabajan con ella por el trato amable que da a sus empleados.
 Answer:
 "A sus empleados"
 Sonia sotomayor impresiona a los que trabajan con ella por el trato amable que da a sus empleados.