The police still haven’t found the lost child, but they’re doing all they .（2011四川卷）
| A．can |
| B．may |
| C．must |
| D．should |
—Mum, have you seen my U-Disk?
—_______ you bought last Sunday? I'm-afraid I haven't seen _______．
| A．The one- one | B．That: one | C．One; it | D．The one; it |
I smoke out of ______ habit, not for ______ pleasure; for I have been in the habit for more than twenty years．
| A．the; a | B．不填; the | C．a: the | D．不填; 不填 |
______ his body and soul to bringing up-to-date technology and International attention to China's Aids problem, Dr David Ho, born in Taiwan, spent little time with his family．
| A．Devoted | B．To devote | C．Being devoted | D．Devoting |
Mr．HoffTman, aged over 60, has recently _______playing golf at the weekends．contributing to his rosy face．
| A．taken to | B．slid into | C．submitted to | D．broken into |
—Why do you always lie to our mother you love her cooking?
—It's only a white lie, so _______．
| A．don't bother | B．my pleasure |
| C．it's no big deal | D．mention it |