[blank] no desperdicie el agua. - "[blank] I did not waste the water."
Estoy triste de que = I am sad that Tengo miedo de que = I am scared that Es une <span>lástima que = It is a shame that Es importante que = It is important that </span><span> It can't be a negative thing that you didn't waste the water, so the first 3 options don't make much sense.
