The following activity, created by Alicia Ricart Vayá is on the definite article.
These activites by Alicia Ricart & María Alcantud are on prepositions.
The next activity, created by Jesús Fernández Domínguez is on the first conditional.
These three cloze exercises are by Nuria Edo Marzà from the Universitat Jaume I.
This exercise is on verb tenses in narratives. The author is Carmen Gregori Signes.