Odpowiedź:
1. I don't understand people who don't like company.
2. You should use your wits when you are in that part of the city. (Tutaj nie wiem czy dobrze, ale nic ineggo mi nie przychodzi do głowy.)
3. A couple of my friends play online games.
4. I won't have finished my homework by 6 p.m., so can we meet tomorrow instead?
5. None of the guests seemed to have any fun.