To reduce emissions of greenhouse gases, many countries are increasing the use of natural gas, wind and other forms of _______ energy.

Every month he measures his baby daughter against the wall to see how much ____ she is getting.

  I don’t know the ____ income of the family, but I do know it is very small.

Would it be ___ for you to pick me up at four o’clock and take me to the airport? 

Susan is ____ to come and see me this Sunday evening.