问题
选择题
When ____ help, you should say “thank you.” or “It is kind of you”.
A．offering
B．offered
C．To be offered
D．to offer
答案
B
题目分析：考查状语从句的省略：句意：当被提供帮助的时候，你应该说“thank you.”或“It is kind of you”。这是省略句，完整的句子是：When you are offered help，当主从句的主语一致的时候，可以省略从句的主语和be动词，选B。