Wstaw a/an/the.
Last Sunday I decided to visit _ Science Museum with my close friend Kate. We went there in _ afternoon to avoid crowds. To our surprise, _ rooms were full of noisy schoolchildren. What's more, we had to hurry because _ museum was closing in half _ hour. We enjoyed _ exhibition _ lot. When we were leaving _ building I realized I didn't have my camera! _ next morning, I hung _ notice on _ noticeboard outside _ museum but I didn't have much hope. I had already begun to look for _ new one in _ online shop, but while I was busy browsing _ internet, _ woman called and said she had found it in the toilets. She noticed _ camera in _ cubicle next to _ washbasin and picked it up. I thanked _ woman and offered her _ reward but she refused to accept it.