Look! How fast he is running! –Hard to _______________his legs were once broken.

What can we learn from Lei Feng? — We should not only think about , we should think about others as well.

Jack，how are you feeling today?—Much _________ .I think I can go to the concert tomorrow．

________ a good teacher, he prepares for class carefully.[ ]

Dad, why must I stop ______ computer games?—For your health, my boy.