Answer:
1)tu ne bois pas de boissons gazeuses
2)le matin mes frères prennent des croissants
3)vous buvez de l'eau minérale
4)vous prenez un sandwich au petit déjeuner
5)mes parents boivent du café le matin
I think they are technically correct, but 1 and 3 sound a bit weird, since you use twice the verb "aller" in the same sentence.
I suggest:
1. Je vais regarder un film au cinéma.
3. Nous allons faire les courses. (buy groceries)
No problem with the 2.
Answer:
United States.
Explanation: United States obliged by the alliance of 1778 to go to war on the side of France