______ about his own safety, though he was ingreat danger himself.

He had intended to do some physics homework during the play, but he soon _____ the play so much that he forgot all about the homework. [ ]

We must accept the possibility ________ one, althoughworking hard, may fail to reach his goal.

Wang Yuheng has a strong brain. He proves that if one tries his best, can prevent him.

_______ busy schoolwork, the children also have to take arts, music and sports classes in their free time.-I wonder what they will become.[ ]