. School children must be taught how to deal with dangerous ________.

On yesterday interview, he didn’t make a(n)_________at all; what’s the matter with him?

The drilling in Antarctica dragged on slowly because of lack of money, equipment breakdowns, environmental ______ and severe cold.

___ did you find in today’s newspaper.

The city government decided to keep the old temple for its historical＿＿＿．