In part 9, questions 1 and 2 are right. In question three, you should say en Espagne. For 4, you wrote a grammatically correct sentence, but the pronoun in the example is leur, and therefore you should have a plural object in your answer.
In part 10, question 3, the pronoun should be la, not lui, because the verb inviter takes a direct object. Ils viennent de l'inviter à déjeuner.