高一英语问题1.Mary's style of writing is ______ (unique) among all

高一英语问题
1.Mary's style of writing is ______ (unique) among all the students in the school.
2.My brother's opinions would often s______ from one extreme to the other.
3._______(deed) are better than wordss when people need help.
4.Every time I try to start the _______(发动机),there's a strange knocking sound.