160. It seemed that there was strange sound outside. We ________ carefully but_____nothing.
| A．listened to...heard | B．heard...listened |
| C．listened...heard | D．heard...listened to |
We could not reason out the way the robbers escaped，because we were unable to find any ________ of them.
| A．chance | B．trace |
| C．point | D．signal |
—We are going to be late, Mary. Do you have the time?
—________.
| A．Yes，I do. | B．Don't worry. |
| C．Five to eight. | D．No, I'm busy. |
Everybody knows about it now! But no one knows ________ once prevented the rumor from spreading.
| A．what was it that | B．what it was that |
| C．how it was that | D．why it was that |
Programs，________to join the old and the young together, are growing in popularity all over the world.
| A．designed | B．to be designed |
| C．designing | D．having designed |
________， the pay isn't attractive enough, though the job itself is quite interesting.
| A．Generally speaking | B．On the contrary |
| C．In particular | D．To be honest |