.--- Derek I owe you a thank – you for all your help. ---.A. If you pleaseB. Don’t mentio

问题补充：

.

--- Derek, I owe you a thank – you for all your help.

---.

A. If you please

B. Don’t mention it

C. That’s it.

D. All right.

答案：

A. If you please

(答案→)B. Don’t mention it

C. That’s it.

D. All right.

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