Practice Makes Perfect: Spanish Pronouns and Prepositions provides extensive exercises, giving you all the practice you need for mastery. Author Dorothy Richmond also has a uniquely clear way of explaining to you when and why a particular pronoun or preposition should be used, not just the correct forms.
Topics include:
Subject Pronouns; Interrogative Pronouns; Pronouns as Objects of Prepositions; Possessive Pronouns; Demonstrative Pronouns; Numbers as Pronouns; Adjective Pronouns; Relative Pronouns; Direct Object Pronouns; Indirect Object Pronouns; Reflexive Object Pronouns; RID: Sentences with Two Object Pronouns; Reciprocal Pronouns; Se and the Passive Voice; Prepositions (and Related Terms)