下列语言表述得体的一项(　　)

The fact suggested that the water _______ and to prevent this from happening again, John Snow suggested that the source of all the water supplies ______.[ ]

The three of us ________ around Europe for about a month last summer.[ ]

They put forward a lot of plans at the meeting, none of _______ carried out in their work.

Go and get your coat. It’s ________ you left it.