Smoking ________ your health.
Remember off the lights when you leave the classroom.
She________ her hometown for many years. No one nearly knows her.
—Were you at home at 9:00 last night? I called you but nobody answered. —Sorry, I ________ at that time.
—May I speak to the headmaster?—He a meeting now. Can I take a message?
Tom hardly hurt himself in the accident, ________?