We can never expect bluer sky unless we create less polluted world.
| A．a; a | B．a; the | C．the; a | D．the; the |
--Where did you ______ our English teacher?
--It was in the supermarket ______ I bought moon cakes.
| A．come to, where | B．come across, that |
| C．come across, where | D．come to, that |
-- Will you go to the show next Monday?
-- Yes. Every boy and every girl in the area _____ invited.
| A．were | B．have been | C．has been | D．was |
Teachers often use simple examples to _______ language points that are _______ the students.
| A．handle ;puzzled | B．express; puzzling |
| C．clarify; puzzling | D．conclude; puzzled |
Now he still remembers ____ it ____ him to get the chance.
| A．that; took | B．what; cost | C．how; cost | D．what; forced |
When ____ to danger and conflict, men tend to increase blood pressure, ______ nervous and anxious.
| A．exposed; felt | B．exposed; feeling | C．exposing; feeling | D．exposing; felt |