a: In 24 hours I flush the toilet 4 times.
b: When I brush my teeth, I take about 2-3 minutes. I don´t spend so much water when I brush my teeth.
c: In a day I brush my teeth 2 times.
d: Washing my hands, I take like 1 minute, and I think I don´t waste so much water, because when I am rubbing my hand with soap, I turn off the faucet.