54. Extensive tests have been on the patient.
| A．carried on | B．carried out | C．carried off | D．carried away |
______ that he has no qualifications in business management , Ken plans to gain the necessary skills by taking a part-time course.
| A．Concerning | B．Concerned | C．Being concerned | D．To concern |
_____ he met with the difficulty did he realize the importance of group work.
| A．Even though | B．Never until | C．Only before | D．Ever since |
Exciting as its special effects are ___ , there is too much violence in the film.
| A．to watch | B．to be watched | C．watching | D．being watched |
His health failing, ____ last year.
| A．so the school gave Mr. Smith leave | B．the school had given Mr. Smith leave |
| C．so Mr. Smith went on leave from work | D．Mr. Smith went on leave from work |
It is reported that some wild animals were found ____ in a big cave in the mountain.
| A．to hide dead | B．hidden dead | C．hiding dead | D．hidden death |