________he couldn’t understand was________，as a teacher of Chinese，he was asked to teach history.
| A．What；that | B．What；what |
| C．What；which | D．Why；how |
I accepted a _____ teaching students ages 6 to 12 with severe learning and behavioral ____ who’d moved from school to school.
| A．position; difficulties | B．post; hard |
| C．job; troubles | D．occupation; difficulty |
It was from John, ____ gave me a big key to _____ my dad.
| A．who; understand | B．that; understanding |
| C．who; understanding | D．which; to understand |
As each man I contacted recounted painful details, I felt as though I were talking with my father. Not only were they similar in appearance, but _____ the same things.
| A．had they experienced | B．they have experienced |
| C．they had experienced | D．had experienced they |
With that information ____, I sought out Douglas Smith, director of the Center for Brain Injury and Repair at the University of Pennsylvania.
| A．in hand | B．in the hand | C．in hands | D．in the hands |
I was making copies at work, and someone came into the room while talking on his cell phone. Should I have left _____ him privacy?
| A．give | B．to give | C．to show | D．showing |