It has been proved _______ eating vegetables in childhood helps to protect you against serious illnesses in later life.
A. if B. that C. what D. when
It is reported that the United States uses ____ energy as the whole of Europe.
A. as twice B. twice much C. twice much as D. twice as much
________ you are interested in astronomy, you can read the book.
A. Even if B. Now that C. Unless D. As soon as
_________ parents say and do has a life-long effect on their children.
A. That B. Which C. What D. As
It is reported that two schools, ___________ are being built in my hometown, will be open next year.
A. they both B. which both C. both of them D. both of which
I can’t find the recorder in the room. It ________ by someone.
A. may take B. may have been taken away
C. must have taken away D. needn’t have been taken away
