In the United States, there is always ____ flow of people to areas of ______ country where more jobs can be found.
| A． | a; the | B． | the; a | C． | the; the | D． | a; a |
I found some old pictures at the back of my drawer which _____ memories of my childhood.
| A．called in | B．called up |
| C．called back | D．called off |
I like the colour of the cap ______ I dislike its design.
| A．while | B．if | C．despite | D．as |
It is believed that _____ European scientist invented _______.
| A．an; a television | B．a; a television |
| C．an; the television | D．a; the television |
The shop has been standing so ______ that a thief finds nothing to steal.
| A．quietly | B．lonely | C．empty | D．Open |
The medical reform in that country turned out to be________failure,but as we know,success often comes after ________failure.
| A．a;the | B．a;/ |
| C．a;a | D．/;/ |