Exhaust fumes are a threat to the _____________ to the air we breathe.

breathe

.breathe --（转化成名词）

The class teacher is so busy that he has not even had no time to breathe.

It looked as __________ she had forgotten how to breathe. A: if B: well C: fa D: soon

so long as men can breathe or eyes

The Earth is surrounded by an ocean of gases we call the atmosphere. The atmosphere is important because it contains the air most living things breathe. It also absorbs heat energy from the sun. It even recycles water by returning it back to the Earth as rain. Without the atmosphere, life as we know it could not exist on Earth. The atmosphere is important for the single reason that most living things need to breathe on Earth. A: Right B: Wrong C: Not mentioned

Hardly daring to breathe, and _____ to think, Sharon blindly turned the page.

Perhaps the day will come _____ people will be able to breathe clean air in cities.

RENAISSANCE () A: revere B: answer C: breathe D: commence E: revive