As Polly observed the passengers on the train, she _______that she was being watched by a tall man in a dark coat.
We arranged to meet at the school gate at 8:00, but she didn’t _____
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.