Answer:
1. La Sra. Garza los compra.
2. María las tiene.
3. Antonio y María los buscan.
4. La Sra. Garza las va a confirmar.
5. María la busca.
6. Antonio lo compra.
Explanation:
You can replace in the answer with the direct object.
It is called a direct object (in traditional grammar, direct complement) to the function played by a syntactic constituent (phrase, pronoun or a substantive subordinate proposition), different from the grammatical subject, which is necessarily required by a transitive verb
it is the person or object on which the action expressed by the verb falls, it is a modifier of the predicate. The direct object can be expressed by pronouns: lo, la, los, las. Substituting the direct object of a sentence for one of these pronouns is a recommended way to verify that it is indeed the direct object.
