Evidence of a powerful volcano, which erupted under the ice sheet of West Antarctica around 325BC and might still be active now, __________ so far by British scientists.
| A．confirmed | B．has confirmed |
| C．is confirmed | D．has been confirmed |
As he had no friends and relatives in the town, the traveler tried to find a _____ somewhere.
| A．log | B．lodge | C．landing | D．lodging |
The thieves _____ him _____ in the park, took his wallet and escaped.
| A．held .. back | B．held .. up |
| C．held .. on | D．held .. out |
My house is very _____ for getting to work as it is only a few minutes from the station.
| A．comfortable | B．suitable | C．convenient | D．available |
The writer was always looking for suitable _____ to use in his next story.
| A．contents | B．articles | C．notions | D．ideas |
The family is a cooperative enterprise for which it is difficult to _____ rules, because each family needs to work out its own ways to deal with its own problems.
| A．set up | B．put down | C．keep up | D．lay down |