29. _____ the project as planned, we’ll have to work two more hours a day.
| A．Completing | B．Complete | C．Completed | D．To complete |
Everywhere man has cut down __________ forests in order to grow crops, or to use __________ wood as fuel or as building material.
| A．the; the | B．the; 不填 |
| C．不填; the | D．不填; 不填 |
For him __________ stage is just __________ means of making a living.
| A．a; a | B．the; a |
| C．the; the | D．a; the |
Of all __________ reasons for my decision to become a university professor, my father’s advice was __________ most important one.
| A．the; a | B．不填; a |
| C．不填; the | D．the; the |
In __________ review off 44 studies, American researchers found that men and women who ate six key foods daily cut the risk of __________ heart disease by 76%.
| A．a; the | B．the; a |
| C．a; 不填 | D．不填; a |
— I knocked over my coffee cup. It went right over __________ keyboard.
— You shouldn’t put drinks near __________ computer.
| A．the; 不填 | B．the; a |
| C．a; 不填 | D．a; a |