6. White-collar workers across China are becoming____ concerned about the impact of the global financial crisis on their careers.

My sister will never speak to others like that ________they say something unpleasant to her .

    the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks．

Helen plays the piano well, ____her favourite instrument is the violin.

There have been no occasions ____ he has come late for school.