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)

【小题1】My brother ________  thirteen and I ________  fourteen. We  ________ both in Grade 7. (be).
【小题2】This is   ________   eraser, it isn’t  ________ toy.(a).
【小题3】________ (this) books are for us.
【小题4】Is that ________ (you) book? No, it’s ________ (she) book.
【小题5】They are in the________ grade , but in ________ classes.(same)

---Is that your book?

---Yes, ________.

一Is that your book?    一Yes___________.

    A．it  is    B．it   isn’t    C．it’s

—Is that her book?

    —Yes, ______. It is nice.

      A. it’s          B. it is          C. it is not         D. it isn’t