题目内容
The scientist _____ Canada and he will give us 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 |
A
解析
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题目内容
The scientist _____ Canada and he will give us 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 |
A
解析