The president stood by a window inside the room, ____, looking over the square.
| A．where I entered | B．into which I entered |
| C．which I entered | D．that I entered |
It was unwise of him to ______ the unreliable data in his speech.
| A．refer to | B．add to |
| C．belong to | D．point to |
—Would you mind giving your advice on how to improve our business management?
—If you make ______ most of the equipment, there will be ______ rise in production.
| A．/；/ | B．the; a |
| C．/; a | D．the；/ |
Some people would rather ride bicycles as bicycle riding has ______ of the trouble of taking buses.
| A．nothing | B．none |
| C．some | D．neither |
—I am afraid I can't return the book to you before Friday.
— ______ .
| A．Take your time | B．Be careful |
| C．Not at all | D．Don't be afraid |
Bluetooth is a radio-technology allowing cell phones, wireless earphones, etc. to ______ radio signals, so that people can contact each other within 10 metres.
| A．match | B．share |
| C．protect | D．exchange |