It is said that ____ wool produced in Australia is of ____ high quality.
| A．/ ; / | B．the ; / | C．the ; a | D．the ; the |
They no longer have to ______ large numbers of temporary workers to do the harvesting.
| A．take on | B．hire on | C．work on | D．carry on |
_________ many times, but he still couldn’t understand it.
| A．Having been told | B．Though he had been told |
| C．He was told | D．Having told |
It is to read the books our teacher recommended , for they are well _____ reading.
| A．worthy ; worthwhile | B．worth ; worthwhile |
| C．worthwhile ; worthy | D．worthwhile ; worth |
He was so __________ a key university that he would work until late into the night.
| A．curious about | B．anxious about | C．desperate for | D．concerned about |
－Look! Everything here is under construction.
－Oh, has the building once _________ for exhibition been pulled down, too?
| A．being built | B．been built | C．to be built | D．built |