融资成本()开发成本
Towards the close of the term, all the students _________(忙着准备考试).
She was too young (assign) __ such work.
Grouping of students within the classroom at the elementary level often helps make __ for the students.
John is the (tall) __ of the two boys.
______(想到还得重新考试)depressedhim.