2016-2017学年 人教版 必修三 Unit 4 Astronomy :the science of the stars grammar课件 (13张)
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6. ___ is a fact that English is being accepted as an international language. 7.It worried her a bit ____ her hair was turning grey. 8. The Foreign Minister said, “__ is our hope that the two sides will work towards peace.” 9. After Yang Liwei succeeded in circling the earth, ____ our astronauts desire to do is walk in space.

It

that

It

what