【2015·安徽】I’m so ______ to all those volunteers because they helped my terrible day end happily.
| A．special | B．superior | C．grateful | D．attractive |
________I have to give a speech，I get extremely nervous before I start.
| A．Whatever | B．Whenever |
| C．Whoever | D．However |
Mark needs to learn Chinese ________ his company is opening a branch in Beijing.
| A．unless | B．until |
| C．although | D．since |
________we have enough evidence，we can’t win the case.
| A．Once | B．As long as |
| C．Unless | D．Since |
________ small，the company has about 1,000 buyers in over 30 countries.
| A．As | B．If |
| C．Although | D．Once |
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 |