Clean the room.

Clean your room.

Clean your room.

Let's clean our room.

Clean up the room.

He keeps his room clean.

Must I clean the room?

I should clean my room.

Your room is really clean.

Helen always keeps her room clean.

Ann always keeps her room clean.

I saw her clean the room.

He always keeps his room clean.

He had to clean his room.

You have to clean your room.

Don't you ever clean your room?

This room is air conditioned.

This room has air conditioning.

I got her to clean my room.

I got her to clean my room.

I don't have to clean my room.

Our teacher made us clean the room.

Does the room have air conditioning?

I would like an air conditioned room.

It also put in place the National Environmental Policy Act, the Clean Air Act, the Clean Water Act.

The air in this room is very smooth.

These chemical pollutants are currently not a criteria air pollutant, as defined by the U.S. Clean Air Act.

If Ted were here, he could help us clean our room.

I'm accustomed to sleeping in a room without air conditioning.

And this is an English willow air diffuser, and that's softly moving that air current through the room.

Clean out the air ducts in your home, in your workplace, in your school.

Take a breath right now of this clear air in this room.

Our goal is a delightfully diverse, safe, healthy and just world, with clean air, clean water, soil and power economically, equitably, ecologically and elegantly enjoyed, period.

Beijing released officially and implemented the 2013 2017 Clean Air Action Plan in Beijing in 2013.

If you have the air in this room, you don't notice each individual atom.

But so in here when there's electricity, the oxygen concentrator takes in room air.

Is there any difference whether I clean my room today, tomorrow, or the day after tomorrow?

It's not something you have to worry about the air in this room all gathering over one part of the room and suffocating us.

And he said, She's telling me that I'm messy, and I have to clean up my room.

Clean air is a basic requirement for human health and welfare and an important prerequisite for sustainable economic development.

US media Scientists from the Air Force Engineering University of China looking into laser satellite to clean up space debris

Now we know room air is gloriously free, it is abundant, and it's already 21 percent oxygen.

Basically the bit that we missed at the start his parents had asked him to clean up his room.

In respect to pollution with black smoke (soot), the city zone can be divided into two zones (a) the zone of clean air, and (b) a zone of low to medium polluted air during the year, and in winter season, extremely polluted air.

But the conditions near the Big Bang are very, very different than the conditions of the air in this room.