1．The writer was so ____________ (精神集中的) in her work that she didn’t notice him enter the room.
答案：absorbed
2．(2019·山东济南校级月考)____________ (合作) is one of the most important lessons students learn at the school.
答案：Teamwork
3．He looked around to ____________ (确认) that he was alone when he withdrew some money.
答案：confirm
4．Mr.Sun was ____________ (任命) as headmaster of the school at the beginning of the school year.
答案：appointed
