题文
【2013山东临沂】—Do you know Earth Day?
—Sure. It in 1970 to tell us to protect our planet.
| A．sets up | B．set up |
| C．is set up | D．was set up |
【2013山东临沂】—Do you know Earth Day?
—Sure. It in 1970 to tell us to protect our planet.
| A．sets up | B．set up |
| C．is set up | D．was set up |
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