People don’t work working．It’s not work itself that’s important to them but such a joy in doing work well．

My father _________ Beijing on business for three days. He will be back in two days.

There will be lecture (演讲) in half an hour.The meeting room with people.

He began to learn the accordion at the age offour.(选出与画线部分意思相同的选项)[ ]

There are many books_____our school library. [ ]