-----Is that your book ?   ------No, ________ .
#20029
A
they are
B
they aren’t
C
it is
D
it isn’t.
推荐题目
---I’m going to have a trip to Fushan Park tomorrow.-----______________. 
#20168
A
Good luck.
B
I’m not sure
C
Have a nice day.
D
Don’t do that.
----How is Sally?----_____________.
#20269
A
She doesn’t know
B
She is my sister
C
She is fine
D
She is in her room.
 —Mike, I am going to Australia with my parents tomorrow.—______!
#20225
A
Have fun
B
Best wishes
C
Never mind
D
Cheer up
----Your pencil case is very nice.  ----__________.
#20087
A
You are right
B
That's right
C
You are welcome
D
Thank you
 —Are these your English books?  —Yes, ________. 
#20074
A
they’re
B
they are
C
these are
D
they aren’t