我进教室的时候学生们正在讨论物理竞赛。(discuss)
The students when I came into the classroom.
This article tells us how to (避免) getting hurt while climbing.
He often (旅行)to beautiful places in the world.
The boy is (勇敢的)enough to save the little girl from the river.
The (第三)step of making fruit salad is to add some honey.
Playing (电脑)games too often is bad for our eyes.