There are fewer teaching positions left in big cities, ______ at the same time there are shortages of teachers in small towns．
A．or B．and C．so D．for
Mike found his missing car in the street outside his house, ______ newly cleaned and polished.
A．looked B．to look C．looking D．to be looking
Viewers continue to watch TV ______ they complain about the quality of the programming.
A．even though B．as if C．as long as D．unless
A lot of people often forget that oral exams ______ to test our communicative ability．
A．design B．are designed
C．are designing D．are being designed
I have no idea ______ the journalist could have got his information from.
A．that B．why C．why D．where
The banker was found in a remote village after ______ his office last Thursday.
A．leave B．being left C．leaving D．having been left
