Go up the stairs. ✬

Don't run down the stairs so noisily. ✬

The old lady climbed the stairs with difficulty. ✬

You must not go up the stairs. ✬

Go up these stairs. ✬

We have to use the stairs because the elevator is out of order. ✬

Would you mind carrying it up the stairs for me? ✬

The child tumbled down the stairs. ✬

I slipped and fell down the stairs. ✬

A drunk man fell down the stairs. ✬