It was a bit doubtful at first, but it ____ to be a really good idea.
7. Classic music is popular____those who have a good knowledge of music.
6. The album (相册) is__________to me as it keeps a record of my childhood life.
5. The captain________him a medal for his special contribution_________the navigation.
4. The girl was listened______in the next room when I came back last night.
3. They’ve made the mistake again, though they__________