Three trees can do the job of 15air-conditioners _________ almost all day.
| A．run | B．are running | C．ran | D．running |
——What’s this?
——______ a key.
| A．He’s | B．This’s |
| C．It’s | D．That’s |
—What’s her name? —.
| A．Tony | B．No | C．Mary | D．345-7896 |
--Is this _______ pencil ？ --No, it’s ______ eraser．
| A．a; / | B．an; a | C．a; an | D．an; / |
—What's this _____ English?
— It's ____ apple.
| A．in; the | B．of ;an | C．in;an | D．on;at |
We are in the same school,but in different grades.
| A．not the same | B．same | C．not big | D．small |