If we use __ gasoline, it will save us money and help the environmel more fewer less

## Step 1<br />The sentence is about using gasoline in a way that benefits both financially and environmentally. The word that needs to be chosen should indicate a smaller amount of gasoline being used.<br />## Step 2<br />The word "less" is used to indicate a smaller amount of something, especially when it is uncountable. In this case, gasoline is uncountable, so "less" is the correct choice.<br />## Step 3<br />The word "more" is used to indicate a larger amount of something, which is not suitable in this context.<br />## Step 4<br />The word "fewer" is used to indicate a smaller number of countable items. Since gasoline is uncountable, "fewer" is not appropriate here.