Whatever happens , Ben, ________ drugs.
It has been proved _______ eating vegetables in childhood helps to protect you against serious illnesses in later life.
It is reported that the United States uses ____ energy as the whole of Europe.
________ you are interested in astronomy, you can read the book.
_________ parents say and do has a life-long effect on their children.
It is reported that two schools, ___________ are being built in my hometown, will be open next year.