She and I twelve years old.
A．am B．is C．Are
This is not my story, nor ______ the whole story. My story plays out differently.
| A．is there | B．there is | C．is it | D．it is |
At school, some students are active ______ some are shy, yet they can be good friends with one another.
| A．while | B．although | C．so | D．as |
—Goodbye, John. Come back again sometime.
—Sure. ______.
| A．I did | B．I do | C．I shall | D．I will |
New technologies have made ____ possible to turn out new products faster and at a lower cost.
| A．that | B．this | C．one | D．it |