For many years, people __ electric ears. However, making them has been more difficult than predicted.
| A．had dreamed of | B．have dreamed of | C．dreamed of | D．dream of |
It is one of the funniest things ______on the Internet so far this year.
| A．finding |
| B．being found |
| C．to find |
| D．found |
Not only ______us what had happened in the accident，but also _______us what they had done.
| A．did they tell；they told |
| B．did they tell；did they tell |
| C．they told；did they tell |
| D．they told；were they told |
I will do it more carefully ________it takes me hours.
| A．even |
| B．till |
| C．even if |
| D．if |
—Have you received Jack's plan?
—Yes，but I don't think his plan is________.
| A．worth being considered |
| B．worthy to be considered |
| C．worthy of considering |
| D．worth to be considered |
Sorry. At no time ________in this building，sir.
| A．is smoking permitted |
| B．smoking is permitted |
| C．does smoking permit |
| D．smoking does permit |