Они в 7 классе?.................................
3.I think, that friends make me happy, if they are best people in my life.
I'm sure that friends make me better.
It's important to have people with whom you to share sadness and sorrow and who support you in your life.
4. A lot of friends are waste of time. Some people very egotistic and think only themselves! They don't support you and make friends with you just because you have money. Firstly, you waste a lot of time with such people. Secondly, you must to terminate friendship with them!
Cat - кошка, кот, бить плетью и т.п.
Did your friends send greetings cards to you?