Osaka

Today I went to Osaka for an entrance examination.. It was harder to solve than I expected.
After that I walked around the city. It was so interesting!

Afterwards I went home and listened to the a CD which I had bought before earlier.
Collecting CDs is becoming my hobby now!!!

Jun,--> putting a space after "," or "." is very important. 

--> "solve an examination" is not correct.  "solve a problem" is good.  "take an examination" is good.