-----Where _____you put the ruler? I can't see it anywhere.
----I put it right here. But now it is ____.
| A．have, gone | B．did, missed | C．had ,going | D．will, missing |
Mark needs to learn Chinese _______ his company is opening a branch in Beijing.
| A．unless | B．until | C．although | D．since |
_________I have to give a speech, I get extremely nervous before I start.
| A．Whatever | B．Whenever | C．Whoever | D．However |
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 |
Anyone, once ____ positive for H7N9 flu virus, will receive free medical treatment from our government.
| A．to be tested | B．being tested | C．tested | D．to test |
（2013·北京卷)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 |