Either you or the president _______ the prizes to these gifted winners at the meeting.
Although he has not gone to college,he shouldn't ________ studying for his degrees.
The reason ________ he was late for the meeting is ________ his car broke down on the road.
________Beijing you see today is quite ________ different city from what it used to be.
—You couldn't have chosen any gift better for me. —________
— I'm sorry I've lost your software. Let me buy a new one. —________.