Will you drop in at my house this afternoon if _________?
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.
If they what I was saying, they'd know what I was talking about