4．
| sister，careful，else，tell，polite，they，however，ready，room，wash |
Behavior is something all parents want and expect．To behave well，（81）however，is not as easy as said．
◆Do your best at school．Your parents will like to see you studying．Listen to your teachers，do your homework and get （82）ready for all tests!
◆Always do your housework．If your parents （83）tell you that you have to take out the rubbish or do some （84）washing，be sure to do it!And make sure your（85）room is clean and tidy．
◆Give everyone lots of love and gifts now and again．Be friendly to everyone，even if they make you angry．If you have young brothers or （86）sisters，be kind to them．Help them with （87）their homework，play with them and listen to them now and again（88）carefully．
◆Don't play music loud，think about everyone （89）else in your house!
◆Try to be calm，and if your friends speak loud，don't talk loudly like elephants．
◆Be responsible（有责任的）!For example，if your parents give you housework to do，do it well．
◆Always be （90）polite to your parents．Say good night before you sleep．
