I'm not quite sure the answer, but I can translate it for you? Hopefully that helps...
Phil and Ana's grandmother wears glasses and is gray-haired. Who is it?
A. It's Tina. B. It's Molly. C. It's Claire. D. It's Helen.
answer:
1. los viajeros están alegres.
2. tómas y yo estamos preocupados por la situación en el aeropuerto.
3. mi sobrina está avergonzada.
4. ¿tú estás seguro de que quieres ser médico?
hope this helps! :o)
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You use "e" when it comes before a word that starts with the "i" sound. To see why, try saying "hijos y hijas" quickly. You'll notice that you can't hear the "y" and it sounds like "hijos hijas." Change the "y" to "e" and it's more clear you're saying "hijos e hijas." AND y and o change if they are followed by the same vowel sounds. (basically if the word after y or o has the same sound then the word will change)
E.g ¿Vas a comprar siete cervezas u ocho? "Are you going to buy seven beers or eight?"
E.g Julieta e Ignacio estudian la medicina. "Julieta and Ignacio study medicine."
hope this helps!!