recycle
Government and industry are beginning to invest in technologies to capture carbon from their chimneys, and entrepreneurs are beginning to figure out ways to recycle it.
cycle
The scientists concluded that the solar wind activity must follow the same cycle.
surround
The "walking on eggshells" feeling surrounds our dealings with other people's children.
atmosphere
The girl's being educated in an atmosphere of simple living was what her parents wished for.
valid
All prices, dates, and booking details listed here were valid at the time of publication.
available
Such big returns are impressive by the standard of other available investments.
prevalent
It is the responsibility of the principal or the supervisor to create and foster an environment where excellent teaching is prevalent.
elsewhere
A: Put these flowers elsewhere. Don't put them here.
B: As you wish, Ma'am.