---Will you help me with this mathematical problem?     .  ---Sure. Let me see. 
#1221
A
It’s your turn
B
Go on
C
I’m stuck
D
See what I mean?
推荐题目
----I’m sorry to keep you waiting.I’ll make short work of this.----______.I’m not in a hurry.
#4315
A
Take it easy
B
Take your time
C
Not at all
D
Do as you like
— Sorry for what I have said to you.— ______. 
#3255
A
Don’t mention it
B
You are nice
C
Forget it
D
You’d better not
— Shall we go to the art exhibition right away?   — ________.
#2735
A
It’s your opinion
B
I don’t mind
C
It’s all up to you
D
That’s your decision