Look at the blackboard, everyone.

Why the blackboard is dirty?

Ann wrote something on the blackboard.

I erased the blackboard for the teacher.

The sentence on the blackboard was erased.

What's that stuff on the blackboard mean?

I started writing English questions on the blackboard.

The teacher is writing on a bamboo blackboard.

I didn't offer to answer be the blackboard.

I call you out. Go to the blackboard.

Compare your sentence with the one on the blackboard.

How dare you write on that blackboard!

Our math teacher drew a circle on the blackboard.

Nice and helpful , Leadership potential , and Reliable blackboard monitor .

What you see on the blackboard is a doctor's first duty.

Yes. This is room 322. My name is on the blackboard.

Again, the first one to go to the blackboard to answer questions.

Hey, sir, the function on the blackboard is not exponential, but trigonometric.

Then we'll ask you to tell us about it by the blackboard.

The equipment found in the tents, including tables, chairs and a blackboard, was also confiscated.

Security experts have written three words on a blackboard at the front of the room adversaries, neutrals, allies.

And I'd like you to imagine that that's a blackboard, and I just used some chalk on there.

Clean the room.

Clean the ink.

When we clean house, the three of us will clean it together.

Clean

clean

Clean

Clean?

Clean.

You're gonna wash 'em until they're clean, whiteglove clean.

Clean up the room.

Is the bath clean?

You clean the fireplace.

Making the clean copy?

Clean through the heart.

Clean Frames

Clean Palette

Aborting clean

Clean Cache

Make Clean

Clean command

Clean key

Clean shirt?

Come clean.