___ the twins is Lucy.
When a question ________at the meeting, no one could answer it.
The River Nile _______ flood large areas, but now the water of it _______ produce electricity.
. I shall never forget the day ____ we first visited the beautiful school.
They are talking so warmly and it looks ___ they had been old friends.
. Nowadays people attach importance _______ the children’s pre-school education.