我尽可能用蜂蜜代替糖。

I use honey instead of sugar ___wherever ___possible.

我们尽可能销售当地的水果和蔬菜。

We try to sell local fruit and vegetables ___wherever ___possible.

城市应尽可能运营电车而不是公交车。

Cities should operate trams instead of buses ___wherever ___possible.