______ hard all day, I fell fast asleep.
| A．Working | B．Having worked | C．Worked | D．To work |
Little Johnny felt the bag, wondering what it ________ .
| A．collected | B．contained |
| C．consists | D．Saved |
His brother ___the army since 2012.
| A．joined | B．has joined |
| C．was in | D．has been in |
It is believed that life in the twenty-first century is much easier than ________ .
| A．that used to be | B．it is used to |
| C．it was used to | D．it used to be |
When _____ Chinese culture with other cultures, we often pay attention only to the differences without noticing the many similarities.
| A．compared | B．being compared |
| C．comparing | D．having compared |
______ of the workers in the computer factory is about two thousand, and ______ of them are women workers.
| A．The number; second third | B．A number; three quarters |
| C．The number; two thirds | D．A number; half second |