---Could you turn the TV down a little bit?
---______. Is it disturbing you?
| A．Take it easy. | B．I’m sorry. | C．Not a bit | D．It depends |
He is so busy. He cannot afford enough time with his son _______ he wants to.
| A．even if | B．as if | C．because | D．before |
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 |