don't let the little girl ____(go)alone.lt is too late

don't let the little girl ____(go)alone.lt is too late
don't let the little girl ____(go)alone.lt is too late

don't let the little girl ____(go)alone.lt is too late
don't let the little girl【to go】alone.lt is too late
let sb. to do sth.让某人做某事（固定搭配）
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