To choose after thinking
Decide
From one side to the other
Across
To show something publicly
Exhibit
Ready to use or get
Available
Completely different or facing something directly
Opposite
Careful study to learn new facts
Research
Not curved; in a direct line
Straight
Learning by doing something directly
Hands-on
100 years
Century
To need something
Require
Continue for a period of time
Last
A reduced price
Discount