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difficulties you often sent your daughter to help me and when I felt homesick you often talked to me patiently. You told me how to improve my efficiency in both work and study and how to get on well with teachers and schoolmates. Furthermore, you invited me to dinner on nearly every weekend. Without your help, I would not have graduated with honors and found a satisfactory job back here in China. I know I can never repay you for everything you have done for me in the past four years, but you can b