1.Mary and Jane are in the same grade.(改写,意思不变)

1.Mary and Jane are in the same grade.(改写,意思不变)
Mary and Jane are（student）in（same）grades.
2.This is a book about Shanghai.（对划线部分提问）划线部分：about Shanghai
（what）（book）is this?
3.This is not an old pear tree.(改写,意思不变)
This （pear）tree is not（old）.
4.The yellow bananas are for the teather.（对划线部分提问）划线部分：yellow
（what）（colore）are for the teather?
5.Mary is his student.She plays the violin very well.(单复变换并改成过去式,将两句合并成一句)
（The）（student）Mary and Alice（play）the（violin）very well ten years（ago）.