What can you see in our classroom? can see...
What colour is it/are they?lt's/They are ...
How many ... are there?There is/are...

Open the door and open the window whenyou come to the classroom!
Because it's good for our health!
(早晨来到学校后,请记住把门窗打开，这样对我们的身体是有好处的哦!)