In January, 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.
| A．it marked | B．marking | C．marked | D．to mark |
As a young man，he didn’t know that he famous later on．
| A．was to become | B．will become | C．had become | D．became |
When copying the letter, pay special attention not to any words．
| A．leave alone | B．leave out | C．leave behind | D．leave aside |
I should consider myself failing my duty if I didn’t take action at that moment．
| A．sudden | B．general | C．personal | D．immediate |
Rising from to a position of power, Mr．King is still working very hard．
| A．nothing | B．everything | C．something | D．anything |
In week or so．I’11 be among unemployed，I’m afraid．
| A．小填；a | B．a；不填 | C．a；the | D．me：不填 |