In order to make our city green, _______. 

. People used to accept a medieval world view in which human life was of little value ____ with the greatness of God.

When a person is absent-minded, he is likely to miss key information ______ on to them.

______ for the breakdown of the school computer network, Alice was in low spirits. 

 —What's the matter with Della?—Well，her parents wouldn't allow her to go to the party，but she still ________.