（1）Most students sleep less than

every night because they have much homework to do.
（2）some students don't know how to save time and are not

while doing their homework.
（3）Some students spend too much time watching TV or playing computer games，and they

very late.
（4）Schools and parents should

some of the homework so that our children can enjoy enough sleep.
（5）For children，they should make

of their time as well.