我该怎么做才能回报你的好意？

What can I do to ___repay you for your kindness?

见到你总是很愉快，我希望如果你来剑桥拜访我们，我能回报你的款待。

It's always a pleasure to see you and I hope I'll be able to ___repay your hospitality if you ever come to visit us in Cambridge.

她想回报朋友在困难时期的所有支持。

She wanted to ___repay her friend for all the support during difficult times.