Viết lại câu

Viết lại câu
1.Keep silent or you'll wake up the baby up
2.You don't save electricity.You pay a lot of money
3.He smoke too much perhaps that's why he can't get rid of  his cough
4.She is very shy that's why she doesn't enjoy parties
5.He doesnn't take any exrcise that's why he is so unhealthy