“When did he leave the classroom?” “He left _______ you turned back to write on the blackboard.”
| A．the time | B．the moment |
| C．until | D．since |
-- Do you mind my opening the window? It's a bit hot in here.
---___________, actually.
| A．Go ahead. | B． Yes, my pleasure |
| C．I would rather you didn't | D． Come on |
_______, we had to feel the way out.
| A．The light being gone out | B．With the light had gone out |
| C．For the light went out | D．The light going out |
The cancer risks _______ with smoking have been well proved.
| A．combined | B．related |
| C．associated | D．caused |
_______ with his research work, the professor cared little about any other things.
| A．Occupying | B．Occupied |
| C．Having occupied | D．Being occupied himself |
_______ Bagrit’s predictions so remarkable is their accuracy.
| A．How many are | B．Why are |
| C．What makes | D．They make |