Hi,
Je devais faire mes devoirs hier, mais je ne les ais pas faits.
HEY THERE.
THE ANSWER IS
Imparfait = what was happening all around you (including you), background. Also ongoing events, habits, what used to be.
Passé composé = what took place at that very moment: a specific event or a succession of specific events, the main storyline.
A. il arrive -> 3.he arrives
B ils arrivent -> 9.they (m) arrive
C qui arrive? -><span> 6. who arrives?
</span>
D. nous arrivons -> 7.we arrive
E. elles arrivent -> 10.they (f) arrive
F. j'arrive -> 1.I arrive
G. elle arrive -> 4. she arrives
H. vous arrivez -> 8. you (pl) arrive
I. on arrive -> <span>5. one arrives</span>
J. tu arrives -> 2. you arrive
1. les
2. ne nous fait pas
3. t'
Not sure what question 4 or 5 is looking for but here's what I think
4. nous
5. eux