Efforts to reach the injured men have been ______ because of a sudden deterioration in weather conditions.

A．scientists warned that apples were dangerous
B．many school children became ill after eating apples
C．it was reported that apples were harmful to health
D．apples were discovered to have too much pesticide

A．what a happy world it is for humans
B．what an innocent boy Jimmy was
C．what an unusual thing that was to happen to Jimmy
D．what a wonderful world that people have ignored