He took her cubs, and ran up the mountain without looking back.

He darted into the hall and up the stairs.

He ran up the stairs.

He jumped up the steps three at a time.

He ran up the stairs panting.

He ran up the stairs breathing very hard.

In the fourth place, even if we succeeded in carrying off the bear cubs, we could not run up a mountain without stopping to rest.

The teacher ran up the stairs.

I ran upstairs two steps at a time.

Ken dashed up the slope.

He jumped up the steps three at a time.

Tom dashed up the stairs, skipping two steps at a time.

I ran upstairs.

I ran upstairs two steps at a time.

Tom ran quickly up the stairs.