Answer:
I am an instrument you can hear but cannot touch or see. What am I?
I am an odd number. Take away a letter and I become even. What number am I?
When you need me, you must find me. When you find me, you no longer need me. What am I?
I row quickly with four oars, but never come out from under my own roof. What am I?
What is harder to catch the faster you run?
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic