I'm on my summer holiday,but still I have so much homework to do.
besides that I have to play the piano for at least one hour a
day.When I try to tell mother that I want to go camping with my
friends,she gets very angry .I know it is very important for
us students to study hard.The more knowledge we grasp,the more
powerful we will be.But the meaning of knowledge is very wide.
（请仔细修改哦,）