___ had they reached the 30th floor ____ they realized that they had forgotten to take the key.
| A．Hardly; than | B．Hardly; when | C．No sooner; when | D．No sooner; then |
They are broadening the bridge to ________ the flow of traffic.
| A．put off | B．speed up | C．turn on | D．work out |
（2012安徽卷）The athlete's years of hard training when she finally won the Olympic gold medal.
| A．went on | B．got through | C．paid off | D．ended up |
（2012江苏卷）— OK, I've had enough of it. I give up.
—You can't your responsibilities.
| A．run off with | B．run up against | C．run out of | D．run away from |
I’m so glad you’ve come here to ________ this matter in person.
| A．lead to | B．see to | C．turn to | D．refer to |
Walking alone in the dark, the boy whistled to ________ his courage.
| A．hold up | B．keep up | C．set up | D．take up |