都不对.
suggest后面不能加to do,可以说suggest (one's/sb) doing sth 或suggest (that) sb (should) do sth.
“你觉得我们应该如何做”用suggest一般表达成What do you suggest we (should) do?（或What do you suggest our/us doing?)
陈述语序what you suggtest we (should) do 或what you suggest our/us doing