When will Diana arrive?—Oh, she . She is in the meeting room now.

The text tells us life story of Elias, who left school and worked in a gold mine.

I _______ keep dogs for protection, but now I keep them as pets.

The old tower must be saved, _______ the cost.

The number of teachers in our school _______ greatly increased last term.A number of teachers in this school ______from the countryside.