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 |
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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 |
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