Let is go down there.(改为祈句) Let is go down there,

题目

Let is go down there.(改为祈句) Let is go down there,
Let is go down there.(改为祈句)
Let is go down there,_______ _________?

答案

你确定是祈使句,不是反意疑问句?你确定是is不是us?
我只知道这个：
Let us go down there,shall we?