她抓住扶手，把自己拉上楼梯。

She ___pulled ___herself ___up the stairs, holding onto the rail.

哈里开始把自己拉上楼梯，朝头顶的检修孔爬去。

Harry started to ___pull ___himself ___up the stairs to a manhole above his head.

他用双臂把自己沿地面拖行。

He ___pulled ___himself ___along the ground using his arms.