When help, one often says, “Thank you”, or “It’s kind of you”A. offeringB. to offerC. to

When help, one often says, “Thank you”, or “It’s kind of you．”
A. offering
B. to offer
C. to be offered
D. offered

A. offeringB. to offerC. to be offered(答案→)D. offered解析：考查省略式，因为英语中如果主从句的主语一致的话，可以省略从句的主语和be动词，when offered=when (one) is offered help,句意是：当一个人被提供帮助时，应该说“谢谢”或者“你真好”。选D。

感谢回答