Beijing is one of the _________________ in the world today .
You had better ask your brother _______ playing computer games. It’s bad for him.
My mother is ill. I _______ stay at home to take care of her.
I feel terrible. I don’t feel like _______.
—Watching TV too much _______ bad for your eyes. —I’ll go to bed right away.
Our teachers often tell us _______ the net bar.