—Have you found the missing?couple in the mountain ?
—No, but we hard to get in touch with them．
| A．have tried | B．have been trying |
| C．had tried | D．had been trying ． |
If you listen to English programs every day, I’m sure you’ll _______ make progress in English.
| A．frequently | B．eventually |
| C．fluently | D．hardly |
All the factories _______ great importance to the car exhibition.
| A．attached | B．afforded |
| C．earned | D．brought |
The policeman _______ that the drunk driver get out of his car.
| A．said | B．commanded |
| C．connected | D．thought |
The criminals ______ in a hotel the other day were connected with a murder(谋杀).
| A．arrested | B．to be arrested |
| C．being arrested | D．arresting |
---If I come back in an hour, do you think the manager will see me?
---I’m very sorry, but he ________ a meeting then.
| A．is having | B．has had |
| C．will be having | D．will have |