Ayuda ?

Ayuda ! Corregir las frases A)I'm Marcos and this her garden. B)My mother's Susan and this is her hat. C)They are Robert and Ann and this is our bedroom. D)He's Marcos and this is his living room. E)We are Betti and Bárbara and this is they favourite book. F)This is Rachel(masculino) and this is his sister . Se tienen q cambiar con I, You, He, She, It, We, They, My, Your, His, Her, Its, Our, y their.