_____ in the queue for half an hour,Tom suddenly realized that he had left his wallet at home.
I didn’t see her in the meeting room this morning. She _____ at the meeting.
You _____ to the meeting this afternoon if you have something important to do.
Alexander Granham Bell invented ___ telephone in 1876.
The little boy wishes to be ___.
--How do you pay the waitress? ---As a rule, they are paid ____.