One of the good things about the use of noise-killing system is _________ it saves the need for a silencer.
| A．whether | B．that | C．how | D．why |
We have no choice. _______ we go or we stay, the result is the same.
| A．Once | B．Unless | C．Whether | D．While |
As a teacher you have to ______ your methods to suit the needs of slower children.
| A．abandon | B．apply | C．adjust | D．accelerate |
If you stick to it, this plan ______ that your company is well prepared to deal with future challenges.
| A．ensured | B．will ensure | C．ensures | D．would ensure |
—Excuse me, can you tell me where the Sleeping Beauty Castle is?
—______.
| A．It’s located on that small island |
| B．It’s one of the best ancient buildings |
| C．It’s probably one of the most fantastic buildings in the world |
| D．It’s famous for its beautiful roof |
Colorful fireworks added ______ the attraction of the night of National Day.
| A．to | B．on | C．up to | D．up |