Can you tell me if you have found the key __________ your room?
| A．for |
| B．to |
| C．about |
| D．by |
At the beginning, I had some difficulty with my English, and my teacher pulled me ______.
| A．down | B．over | C．up | D．through |
Washington D.C. ______ between Virginia and Maryland on the Potomac River.
A. lays. B. lies C. sits D. seats
They planned to go to Beijing for sightseeing, but because of their daughter's unexpected illness they had to stay at home _____.
| A．instead | B．really | C．however | D．though |
And video cameras can be used to_______ people’s actions at home.
| A．keep | B．make | C．record | D．watch |
The international police has come into existence and they were ____ the key to global security.
| A．thus | B．for | C．or | D．otherwise |