—Thanks a lot, Mr. Wang. I don't know how to ________ the help you gave me during my stay here.

题目简介

—Thanks a lot, Mr. Wang. I don't know how to ________ the help you gave me during my stay here.

题目详情

—Thanks a lot, Mr. Wang. I don't know how to ________ the help you gave me during my stay here.
—It's my pleasure. Welcome to China again when you have time.
[     ]
A. pay off  
B. pay back  
C. pay for  
D. pay to
题型:单选题难度:中档来源:期末题

答案

B

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