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The scientist Canada and he will give us a talk when he back. A.has gone to/come

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The scientist Canada and he will give us a talk when he back. A.has gone to/come

The scientist _____ Canada and he will giveus a talk when he _____ back.

A.has gone to/comes

B.has been to/will come

C.has gone to/will come

D.has been to/comes

 

试题答案

【答案】

A

【解析】略