1. I don't  think that the necklace is made of diamond, ________?

　　A. do I    B.  do you    C.  isn't  it    D.  is it

　　2. His wife had the carpets and the curtains cleaned, ________?

　　A. hadn't     B.  had    C.  didn't  she    D.  did she

　　3.It's  my son's  wedding next week, and I have to do my best for that,_______  ?

　　A. haven't  I     B.  don't   I    C.  don't  he    D.  isn't  it

　　4.Harry wouldn't  become a teacher if it hadn't  been for the holiday, ______  ?

　　A. would he    B.  had it    C.  would it    D.  had he

　　5. No one left here yesterday,________?

　　A. didn't  they    B.  did they    C.  didn't  one    D.  did one

　　6. Birds rarely build nests in our garden,________?

　　A. don't  they    B.  do they    C.  didn't  they    D.  did they

　　7. You must have been to the Great Wall,____________?

　　A. mustn't  you    B.  haven't  you    C.  aren't  you    D.  must you