The former manager of the company was said _____ in an organized crime.
| A．to be involved | B．to involve |
| C．to have involved | D．to have been involved |
After many experiments, finally we __________ the material we wanted very much.
| A．success to get |
| B．success in getting |
| C．succeeded to get |
| D．succeeded in getting |
The water __________ the sand soon disappeared.
| A．that added |
| B．adding to |
| C．added to |
| D．added in |
Mobile phones __________ in China are well worth trusting for many reasons.
| A．produce |
| B．producing |
| C．have been produced |
| D．produced |
In the last few years thousands of films __________ all over the world.
| A．have produced |
| B．have been produced |
| C．are producing |
| D．are being produced |
Sam___________ some knowledge of the computer just by watching others working on it.
| A．brought up |
| B．looked up |
| C．picked up |
| D．set up |