In 1990 , ________Belgian inventor by ________ name of Bakelite invented the first of the modern plastics.
| A．a; a |
| B．a; the |
| C．the; a |
| D．the;\ |
She says that she’ll have to close the shop ________ business improves.(2013·江西，28)
| A．if | B．unless |
| C．after | D．when |
Mark needs to learn Chinese________his company is opening a branch in Beijing.
(2013·山东，26)
| A．unless | B．until |
| C．although | D．since |
You must learn to consult your feelings and your reason________you reach any decision. (2013·湖南，23)
| A．although | B．before |
| C．because | D．unless |
One can always manage to do more things，no matter________full one’s schedule is in life. (2013·辽宁，24)
| A．how | B．what |
| C．when | D．where |
I took my driving license with me on holiday，________I wanted to hire a car.(2013·北京，30)
| A．in case | B．even if |
| C．ever since | D．if only |