1. marmalade 柑橘酱
At this point, Fred caught his mother's eye and quickly busied himself with the marmalade.
Tom busied himself with the marmalade while others were ready for the chores.
2. secondhand 二手的
I heard that secondhand books were popular in aboard because of the price.
3. prefect
n. 〔英国某些学校中帮助管理年幼学生的〕学长，级长 | 地方行政长官，省长，县长
He was already dressed, his Hogwarts prefect badge pinned to his sweater vest.
4. Briskly 迅速的，活泼的
Teachers always like briskly students.
Summary:
George thought the books were expensive. Mrs. Weasley expected to take Ginny 's things secondhand. Percy had already dressed up himself. Ron's owl took back a letter from Hermione. In the letter, Hermione said she was very happy and busy in the school. She took a good bless for Ron and Harry .
