In...On...At...

What is the difference between in, on, and at?

I´m back Hello world. I´m back. I would like to continue practicing my English. I started working in US company, so I need to speak and write emails all days. Cheers.

Swimming Pool At Saturday, we went to a friend´s house that has a swimming pool. We swam and ate pizza. After, we went to his house and hang out another couple of hours. At the end of the day, we were really tired and we went to sleep. The day was sunny so I tanned alot.

Surprise Party Thursday was my friend´s birthday. His girlfriend made him a surprise party the next Saturday. We arrived early at his house while he was in a wedding. We parked our cars one block away. When we were hidden and when he entered to this house we all yell. He didn´t suspect anything until he saw our cars parked.

Working Late Yesterday that night, I have a maintenance window with a customer, and we found the root cause of the problem, it was the redundant link. The interface was going up and down. I suggested to the customer to report it to the Carrier. I thought I would take longer to resolve the issue.

Practicing English For improving my English, I download English audio lessons. Everyday, on my way to work, we listen them and learn new vocabulary. Actually, it have been only two days =), but the most important thing it´s that we already started. Also, I like to read novels, I like the ones of Danielle Steel, the stories are like the soap opera Grey´s Anatomy, I have seen all the seasons.

Morning Gym Today, I woke up at 5:30 am, and I went to the gym. I have been going for 2 weeks and today specially, I felt more tired. Now I´m at work and I feeling sleeppy. For feeling better I took a pill for my headache.