The ____ populated area was a breeding place forinfectious diseases.

Due to the bad weather the plane was ____ for two hours.

We can ____ the two islands with a bridge.

The present situation forced us to ____ this policy.

It is necessary that the students ____ more excercises to do.

Great as Newton was, many of his ideas ____ today and are being modified by the work of scientists of our time.

As ____ clear from his manners, he is a teacher.

____ before we depart the day after tomorrow, we should have a wonderful dinner party.

He concluded his speech with a remark that failure ____the mother of success.

Every means ____ tried out but never with success, as far as my knowledge goes.