The boy is (勇敢的)enough to save the little girl from the river.
He works on the plane.He is a good .(飞行员)
Smith is an old teacher with thirty years' (经验)of teaching.
I am going to be a (作家) in the future.
Would you mind (打开)he window? It's too hot inside.
Please be (安静的) in the library.