—Guess what? I happened to have met Mark at the party last week. —If my memory serves me correctly, you two ______ each other for almost ten years.
It is impossible to ________one’s goal without working hard.
A poet and artist ______ coming to speak to us about Chinese literature and painting tomorrow afternoon.
The president spoke at the business meeting for nearly an hour without ______ his notes.
Only when your identity has been checked ______.
How did you get ________news that they would take ________trip to Disneyland?