____ me go.It's very importart for me.1\do let 2\let do 3\doing let 4\ to do let

____ me go.It's very importart for me.1\do let 2\let do 3\doing let 4\ to do let

1 是正确的.
Do let me go .It's very important for me.务必让我走,这对我很重要.
do 起强调作用,务必,一定.