To, at, in, into presentation Active pasive voice continuous Universidad nacional-de-chimborazo-presentation (1) Two objects in an active sentences – presentation Active pasive voice continuous Universidad nacional-de-chimborazo-presentation (1) Adjectives with prepositions Adjectives with prepositions Passive voice-future-tense Passive voice written work Adjectives followed by prepositions 12 Countable and uncountable nouns 
