J. K Rowling’s career really ________ when Harry Potter and the Philosopher’s Stone was published in June 1997 and achieved instant success.
Only when you leave your parents for college education _______ how much you love them.
The cause he had devoted himself to _______ a perfect success.
Many experts believe that teachers’ development is _____ the key to better education lies.
Evidence has been piled up_____drinking water after getting up in the morning contributes to one’s health.
There is a great deal of research ___that music activities engage different parts of the brain.