题目内容：

1.. My brother ________  thirteen and I ________  fourteen. We  ________ both in Grade 7. (be).

2.. This is   ________   eraser, it isn’t  ________ toy.(a).

3.  ________ (this) books are for us.

4. Is that ________ (you) book? No, it’s ________ (she) book.

5.They are in the________ grade , but in ________ classes.(same)