_____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.
| A．A; a | B．The; / | C．/; the | D．A; the |
A good storyieller must be able to hold the listeners' attention ______ he reaches the end of the story．
| A．when | B．until | C．while | D．unless |
Many students find _____ jobs during their summer holidays．
| A．permanent | B．comfortable | C．temporary | D．contemporary |
______ young people see and hear in the media helps them to figure out how the world works．
| A．Which | B．What | C．That | D．How |
_____ about Lucy, the teacher called her parents to find out why she was so often absent from class．
| A．Concerning | B．Considering | C．Concerned | D．Considered |
—Do you mind if I smoke here?
—_____．I’ve got a bit of cold these days．
| A．I’m afraid I do | B．Of course not |
| C．No trouble at all | D．Yes, just go ahead |