Fill in the blank with the best suitable option:
You are never going to save enough money to make a house if you keep on buying expensive appliances for your car. You can't have your cake and eat it _______.
The correct option is D 'too'.
The phrase 'you can't have your cake and eat it too' means that you can't have the thing which you have already given. Then other words don't construct the phrase properly. So, Option D is correct.