your help
Le di tres libros de texto a cambio de su ayuda.
I gave him three textbooks in exchange for his help.
Gracias por su ayuda pero creo que esperaré a la grúa.
Thanks for your help, but I think I'll wait for the tow truck.
— Yo vi al diablo (2010)
Te equivocaste al rechazar su ayuda.
You were wrong to refuse their help.
Tom llamó a Mary para decirle que podría necesitar su ayuda después esa tarde.
Tom called Mary to tell her that he might need her help later that afternoon.