They will have been sitting here for 20 minutes when I come.
In ten minute's time i shall have been hanging around...
When they finish I shall have been waiting...
Tomorrow it will a monthas they will have been working...
He will have been working...
He will have been repairing...
He will have been studing...
He will have been teaching...
By next July she will have been living...
At six o'clock I shall have been working...