—Your hometown is so beautiful!
—Yes. What's more, _ _____ we live there is fresh air there is no in town.
| A．that | B．whether | C．where | 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 |