How are you getting along with your senior high school? It may be hard for you as this is the first time that you (leave) your parents. I know that you are now having trouble (communicate) with others, and you may often feel lonely. That's you are new here and people don't know about you. But I think you can overcome the difficulty if you can follow the advice below.
First, you should attach great (important) to taking an active part in the discussions and show your own opinions about the matters, and at the same time, learn to listen to other people's views (careful). Second, you should learn about your classmates' likes and dislikes, which can make you get familiar them. Only in this way can you get to know more (difference) people and show them that you are just as friendly. Last but not least, I'm always here ready to help. We can take part in some (activity) together and I can introduce you to others.
There's no need to worry too much, people will know you more very soon and will like to make friends you if you can do as the above. Just remember, "God helps those help themselves".