请帮忙确认下面翻译有没有错（中文译英文）谢谢！！！

Question

请告诉我们你什么时候可以完成它。
Please tell us when you can complete it.

Answer 1

Please let us know when could you finish it. 或者please tell us when you can finish it. 反正老外都可以看懂。

Answer 2

用finish tell us when you can finish it please 刚刚用the day 试了下 虽然when怪怪的但还是用吧

Answer 3

Please tell us what time you can complete it.