听上面一段独白，补全所缺句子/分句。共5句。
Now I want to tell you about a palace I visited with my family this summer. My parents are interested in history, so 1 . Once inside, we climbed up some steps to explore the palace walls. They were in good condition 2 , and were 16 metres tall! But it was their width that was just unbelievable. Several people could walk along the top of them at once, side by side! Then we went into the palace. 3 , and I loved the Queen’s bedroom! But those were nothing compared to the library. After that, we went outside and walked towards a huge pool in the grounds. There were lots of ducks, 4 . Finally, we came to a palace garden. It was full of roses, 5 , which made it feel very quiet and calm. We had a lovely day!
