—The light in his office is still on. Do you know _______?
—To prepare for the material(材料) the meeting will need tomorrow, I think.
| A．if he works hard | B．why he stays up so late |
| C．why is he so busy | D．when he will stop working |
This is my friend , Jenny and is Jim.
A. it is B. that is C. this
---What’s this ?
---_____________.
A.This is a pencil
B. Fine, thank you
C. This is pencil
It is __________ apple.
A.a B. an C. the
Our teacher always tells us _______ more English in and out of class.
| A．speak | B．spoken |
| C．to speak | D．speaking |
Tom can make his kite ______ higher in the sky.
| A．fly | B．flies |
| C．flying | D．to fly |