_____ the 2000 Olympic Games will be held in Beijing is not known yet.
| A．Whenever | B．If | C．Whether | D．That |
The doctor will see you again next week. _____, you must rest as much as possible.
| A．Somehow | B．However | C．Meanwhile | D．Indeed |
Of all the books on the shelf,is of any use for improving our practical skills of survival in the competitive world.
| A．nothing | B．no one | C．neither | D．none |
—How was your recent trip to England?
—I’ve never had ______ one before.
| A．the most pleasant | B．a more pleasant |
| C．a most pleasant | D．a pleasant |
When you talk about a person’s _____, you are referring to the country, race, or social class of their parents or ancestors.
| A．origin | B．nationality | C．generation | D．relation |
In ____ accident _____ knowledge of first aid can make _____ real difference.
| A．an; a; a | B．the; a; the | C．an; the; 不填 | D．a; a; 不填 |