Answer:
What can you add to a bucket full of water to make it lighter?
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
Why are foot injuries so serious?
A red drum which sounds without being touched, and grows silent, when it is touched.
What is 9 added to any number ending in 1
You throw me out when you use me and take me in when you are done.