—The problem isn't difficult for the children to work out, is it? —_____ . Perhaps they should have been given a more difficult one. 
#3913
A
Yes, it is
B
Yes, it isn't
C
No, it is
D
No, it isn't
推荐题目
---What does Linda look like?---        .
#24421
A
Very kind
B
I really like her
C
It’s interesting.
D
She’s tall.
—May I use your phone? I left mine at home.—________. Here it is.
#904
A
By all means
B
Never mind
C
It is a pleasure
D
Don't mention it
--Let’s go to the zoo this weekend. ---_________. But I have to finish my homework first. 
#21640
A
I’d love to
B
That’s right
C
That’s all right
D
You’re right