Barack Obama’s first speech as president left a strong impression his audience.
| A．on | B．in | C．at | D．by |
The passenger was tired and walked more slowly but he got home.
| A．after all | B．at all |
| C．above all | D．in all |
It is rather that we still do not know how many species there are in the world today.
| A．misleading | B．embarrassing |
| C．boring | D．demanding |
The girl hasgreat talent for writing. Up to now, she has written six books, including book about the robot.
| A．a; a | B．the; the |
| C．不填; 不填 | D．不填; the |
—Nancy, are you sure you can do it by yourself? —.I did it before.
| A．Take care | B．Don’t worry |
| C．I’m not sure | D．Not exactly |
I used to have a to that vase,but I broke it.
| A．company | B．accompany |
| C．companion | D．community |