Don’t talk loudly at the meeting. If you ________, you will have to leave. A. do B. are C. did
---What were you doing at this time last night? --- I _________ a phone call.
Mr. White _____in that city since he moved there thirty years ago.
Don’t make a noise! They _______on a physics problem now.
_____of my parents used to travel all over the country on their own.
---Can you drive a car? --- No, I ________. I’m not old enough to get a license.