let is cross the road 同义句

Let us cross the road.
= Why not cross the road?
= Why don't we cross the road?
= Shall we cross the road?
= What/How about (us/our) crossing the road?
这些都是英语中用来征求意见的常用句型.
/ 表示可以任意选用其一,（ ）表示可以省略不写.