We need so __ people as possible

Feminine gender of fox is Which one of the following words is masculine ? I had a talk with him. Here 'talk is a/an - The word 'little' in the sentence "There is little hope this case' means- There is _____ milk in the bottle. The warning of the authority falls on deaf ears. Here warning does the function of — .... of what he said was very sensible. Which one is a masculine gender? Which gender is the word 'spouse'? What is the feminine gender of the word 'earl'?