1. aletranger = the foreigner
2. au bord de la mer = at the seaside
3. chez moi = home
4. semaine = week
5. mois = mouth
6. quinzejoura = fifteen days
7. famille = family
8 copaine = friends
9. couldn't find it
10. aine = elder
Pourquoi means why. Je suis is passe compose in etre. Une pomme de terre means potato. You NEED a verb.(Ex. Je suis couper le pomme de terre.) I cut the potato. Plus you need to know when to use passe compse avoir and etre. As well as Imparfait if you are talking about the past. Trust me I am in french 3.
The answer is sont
( i know because i am in French II)
2. Choisir can be conjugated as a special -IR verb. Because of the article vous, we know that the ending of the word will be -ez. As shown through all -IR verbs, the ending of this word specifically would be -issez. Combined with the root of the word, chois, you would get the word choisissez.
3. Finir can be conjugated as a normal -IR verb. Because of the article nous, we know that the ending of the word will be -ons. As shown through all -IR verbs, the ending of this word specifically would be -issons. Combined with the root of the word, fin, you would get the word finissons.
I hope this helps! Bonne chance!