It is so good a habit to instruct children to lay things _______ they belong when they are young.

下列各句中，画线的成语使用不恰当的一句是  (    )

He said that he would go to the central and western region _____ he graduated from Zhejiang University[ ]

They don’t feel safe in our town at night because it _____ so dangerous. There’s a robbery every week now.[ ]

I first met him a week ago while I ______ along Bridge Street.