The dog stopped    ▲   at strangers when they ran away. (bark)
The    ▲    people think red, green and white are Christmas colors. (west)
. Every day the chimneys of    ▲   pour a lot of smoke to the air to pollute it. (factory)
I think you may be    ▲    in our new computer games. (interest)
. I often make chocolate cake by     ▲   . (me)