the story is from waiting friends in another university...

Since we have sports in our school these days, my friend asked me to come help at the school track meet, but I felt like a fifth wheel when I got there. They already had enough people to help so I just stood there feeling useless. (句子太长了，应该分到两句子) Then I stepped away and worked on a composition on my laptop. (我们不知道这个composition是什么，所以应该用“a”)
I spent a good time with my friends last night, (这样表达听来你说“I spent most of last night with my friends last night”，不知道你是不是想表达"I had a good time with my friends last night") we went to another university to visit some other old friends. I was waiting for them for a long time earlier alone in a snooker (?) hall near the foreign students' apartments. There were some foreigners passed by me saying "hello, ni hao" to me, but i was busy with my cell phone. I stared at the screen and chatted with my friends. Tens of minutes passed (这样说有点尴尬，可以说“A few minutes passed”), when I finished calling my friend, a black guy and his friends walked toward me slowly, then asked if I wanted to play snooker with them. because i didn't know how to play it, so i just said, "Thanks, but I'm just here waiting for my friends," shrugged and looked away. It was annoying that my cell phone was out of battery that time, so i just sat around and watched them play the game.
After a while, they were getting tired, so some of them put down their pool cues and went somewhere for rest. (哦，ｓｎｏｏｋｅｒ是ｂｉｌｌｉａｒｄｓ吗？）Finally, I saw a foreigner come and he ended up sitting besides me. I didn't say anything, because at the moment, I was anxious about my friends that if she could contact me and found me here. That second, I heard a voice, I saw that he opened his mouth to say something at the moment but i didnt get anything out of him XD
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（omitted here 800 characters lol）
After about 10 minutes of talking, I got to know him a little bit and at the same time, my friends came. It was about dinner time, and all of us felt like super hungry. When we were thinking of where to go, the foreign student suggested: "How about going to my apartment to have dinner? It's near here" We had all wondered what are the apartments foreign students lived at were like before, and this was a good opportunity to visit one of their rooms lol. We did not want to miss out on this opportunity, so we followed him and had a nice dinner there. He and his friends are really good cooks, and we enjoyed the Farfalle they cooked very much .
The other day was really nice, hopefully I can meet some more kind foreigners:)