David knocked at the door for nearly half an hour______Mary opened it, unwilling.
| A．when | B．while | C．until | D．before |
—Your spoken English is so good. Have you been abroad?
—Yes. I in London for two years.
| A．have stayed | B．stayed | C．had stayed | D．have been staying |
—We have two seats free here. Which one would you like?
—! My mother is coming to see the film with me.
| A．None | B．Neither | C．All | D．Both |
After our government launched a (n) to popularize Chinese language worldwide, lots of Confucius colleges have appeared in foreign universities.
| A．campaign | B．arrangement | C．measure | D．struggle |
The cruelty of the terrorists towards the two Chinese engineers in Pakistan and____of the terrorists towards America in September 11 filled everyone with horror.
| A．those | B．that | C．one | D．it |
____ regular training in nursing,she could hardly cope with the work at first.
| A．Not having received | B．Since receiving |
| C．Having not received | D．Not received |