Professor Hawking stepped into the office he knew that there was no hope.
| A．Unless | B．Now that | C．The moment | D．Although |
__________ with foreign countries can bring us much information about the world.
| A．Contrast | B．Competition | C．Contact | D．Combination |
—Have you known Dr. Jackson for a long time?
—Yes, since she________ the Chinese Society.
| A．has joined | B．joins | C．had joined | D．joined |
You may depend on __________ that they will be there on time.
| A．this | B．that | C．it | D．/ |
The old custom __________ an old country in Europe.
| A．originated from | B．dated from |
| C．got from | D．detracted from |
Any normal boy of his age would be __________ with this game.
| A．common | B．familiar | C．similar | D．regular |