Answer: thank goodness for the last answer
Explanation:
Sounds good
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.
Si je tombe en descendant du bus, j'ai mal aux pieds. (correct)
Lajskwkjskwksjwksjwndiehdiejduejksisjiejddj.
hope this helped