HOW MUCH FUEL IS LEFT

Question

3.  How much fuel is left ?A. No one know exactly  B. Let's use it as much as we would like C. It will never be used up D. There is a lot of fuel

Answer

3.  How much fuel is left ?A. No one know exactly  B. Let's use it as much as we would like C. It will never be used up D. There is a lot of fuel