_______the virtual world of Real Cine， the headsets even have small openings _______ smells to match the environment.
| A．Adding to；give out | B．Added to；give off |
| C．To be added to；giving off | D．To add to；giving out |
He 20 dollars for his old bike the other day.
| A．paid | B．took | C．spent | D．offered |
A dark blue design will not on a blackboard.
| A．clear up | B．go up | C．show up | D．pick up |
The store had to a number of clerks because sales were down.
| A．lay out | B．lay off | C．lay aside | D．lay down |
It is much easier to talk about social change than to .
| A．bring it on | B．bring it about | C．bring it up | D．bring it out |
This is a story completely by him, so don’t rust him.
| A．discovered | B．invented | C．found | D．known |