1. The writer of the book is an investment________ (顾问).
2. Their prices are high because________ (生产) costs are very great.
3. The failure of the operation has shaken my ________ (信心，相信) in the doctor.
4. The boy is a ________ (增光的人) to his parents.
5. It was a bad year for new films, in terms of both________ (数量) and quality.
