He is a well-known singer, but he is ______an actor.
—Why did Sam weep? —He couldn’t stand _______ like that before the whole class.
—Have you _______ any information? —No, I’m going to _______ the business department.
When you come to the fence, you can see a notice _______ there saying “the grass.”
Everyone here will thank the firefighters for the things they have done to prevent fires _______ the environment safer.
—I don’t suppose the police know who did it. —Well, surprisingly they do.A man has been arrested and _______ now.