peter doesn't know that girl,whose sister is a famous pianist.
my bicycle broke down,so I need have it fixed.
His health is bad,because he doesn't pay attention to food and resting.
The higher a plane flies,the less clear we look at it.
Heated water turns into steam.
no pains,no gains.or Pains lead to gains.
He found it difficult in writing English essay.
Nowadays the parents spend a lot of money to provide their children with a good education.