Only when he arrived home _____ that he had left his key in the office.
| A．will he realize | B．he did realize | C．did he realize | D．should he realize |
At this moment,I cannot give you an answer yet.I’d like to spend___more time considering this problem
| A．rather |
| B．fairly |
| C．no |
| D．really |
The situation persent is very difficult for the government___
| A．to control it |
| B．controlling |
| C．to control |
| D．to be controlled |
—What do you think of the book?
—Oh,excellent.It’s worth___a second time
| A．to read |
| B．to be read |
| C．reading |
| D．being read |
It is___to include really high-quality illustrations
| A．worth |
| B．worthy |
| C．worth while |
| D．worthwhile |
The chemistry teacher required the students___more attention___the lab clean
| A．to pay;to keep |
| B．to paying;to keeping |
| C．to pay;to keeping |
| D．paying;keeping |