Reign: I think you should define "like" first. If you mean 'How do you know if I have a crush on someone', then it's really up to your definition of "crush" as well. I guess if you're comfortable around him/her or if he/she makes you feel good about yourself or if you find that person attractive appearance-wise and personality-wise, then you could say that you like that person.
Anna: I'm going to assume like you mean romantically. You like that person when you think about them so much you can't function properly. Your face turns red by the mere mention of their name. For some people, you will snap at anyone who teases you about him/her.
"My parents are ignoring me and I don't know why?? I didn't do anything but I feel like they're mad at me for someone reason. What should I do?"
Reign: Ask them. Maybe they're just tired and caught up with work or maybe you did do something wrong that might have hurt them and you just didn't realize it; either way you have to ask them.
Anna: Talk to them. It could be that they're really busy with work. Don't you dare be scared on addressing this problem because it is a parent's duty to give their child enough attention.
"Do you think I should take review classes for college this summer?"
Reign: I wouldn't know what review classes are like because I didn't take any but it's worth a shot. You could also buy self-study books if you're not up for attending classes. I guess classes will help you understand lessons more since there's an actual teacher present, but usually college entrance exams are more on stocked knowledge. I have had some friends who said that the things they learned from their review classes weren't even in some tests but why not give it a try?
Anna: Uh no. What I've noticed is that those people who seem like they need review classes and took it didn't get to pass their dream school anyway. So I suggest you take it easy for the summer and wait till the two weeks before your CET. Then you can review. I mean refresh your memory and familiarize yourself with the topics, not be able to recite the periodic table by heart.