帮我看看有没有语法错误
1。the cell phone which is being used by miss whalen cost her only 1 yuan.
2。come here to see the little boy who can speak five languages.
3。is the secretary a person who helps a boss to keep secrets.
4。the old book whose cover was broken cost a lot of money.
5。computer and science is a subject which is learned by each student.
都是自己做的翻译题。。只要帮我看看有没有语法错误就行
谢谢！！
参考答案:好像是没有