The meeting was expected to start at 9 o'clock but the manager didn't turn up ______ twenty minutes later.
The purpose of the campaign is to raise the public’s_______ of the dangers of passive smoking.
A recent study has come up with _____ unexpected conclusion that ____ Africa elephants should be divided into two different species.
If I long enough to have a job, I would choose to be a doctor,those AIDS patients.
Once a difficult and even dangerous place , Vietnam is now a friendly detestation that welcomes visitors from all over the world .
There are no easy answers to questions brought to us by the rapidly changing world, we can try to turn challenges into opportunities.