By the end of 2010, she (be) ______in Beijing for 4 years.will have been当句中出现by+

游客2023-09-22 55

问题 By the end of 2010, she (be) ______in Beijing for 4 years.

选项

答案 will have been

解析当句中出现by+一段时间时，动词用完成时。此句中所加时间是将来时间，所以应该用将来完成时。

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