________ Yao Ming has retired from the NBA, the pleasure we have got by watching him play basketball at home and abroad will last long.
| A．While | B．When | C．As | D．Since |
One can always manage to do more things，no matter________full one's schedule is in life.
| A．how | B．what | C．when | D．where |
She says that she'll have to close the shop ________ business improves.
| A．if | B．unless | C．after | D．when |
In the global economy，a new drug for cancer，________it is discovered，will create many economic possibilities around the world.
| A．whatever | B．whoever | C．wherever | D．whichever |
You must learn to consult your feelings and your reason________you reach any decision.
| A．although | B．before | C．because | D．unless |
I took my driving license with me on holiday，________I wanted to hire a car.
| A．in case | B．even if |
| C．ever since | D．if only |