Answer:
Yo pondría el libro en la mesa.
Explanation:
In this exercise, you have to select the word that fits the sentence. In this case, ''pondría'' is the only word that fits because of its person and number. ''Yo pondría'' is the first person, singular form.
''Pondrías'' is the second person, singular form.
''Pondríamos'' is the first person, plural form.
''Pondrían'' is the third person, plural form.
