－DoyouknowEarthDay?     －Sure,it

问题详情：

－Do you know Earth Day?

      －Sure, it _______ in 1970 to tell us to protect our earth.

A. gave up       B. sets up      C. was given  up      D. was set up

【回答】

B

知识点：动词和动词短语

题型：选择题