This is the second letter that he has ___ him recently.
| A．heard from | B．received from | C．heard of | D．got |
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 |
—The government should think about the medical reform again and make sure of medical care，in my opinion.
—________.The medical services and efficiency are not good at the moment.
| A．You're confusing me | B．I cannot agree more |
| C．That's all right | D．Go ahead，please |