Sentence #1 has a demonstrative adjective. Sentence #2 has both a demonstrative adjective and a demonstrative pronoun. Sentence #3 uses a regular possessive pronoun. Sentence #4 is the only sentence that uses a present progressive tense.
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2) gabinetes hay unos gabinetes en la cocina
the answer is cosas because the sentence would be: I need to know what types of things i need to bring to travel to the Dominican Republic.
