The project alongside with the experiment we had once devoted so much time__________ perfectly.
| A．to work out | B．to working out |
| C．to worked out | D．has worked out |
In the old days, people ______ a fire with wood in our village.
| A．were used to make | B．used to making | C．used to make | D．used making |
I have to walk to school today because my bike _____now.
| A．is being repaired | B． has been repaired | C．is repaired | D．has repaired |
My first______ of him was that he enjoyed telling jokes.
| A．expression | B．attention | C．satisfaction | D．impression |
Remember to think actively as you listen in class, ____ you may fall asleep.
| A．but | B．and | C．or | D．so |
The roads are crowded______ walking to work is even quicker than driving.
| A．in order that | B．so that | C．so as to | D．in order to |