--- I will go to your place at 3:00 tomorrow afternoon. --- I’m sorry, but I ______ to Beijing by then.
--How long __each other before they ____ married?—For about a year.
--Is ___ here? –No, Bob and Tim have asked for leave.
In some parts of the world, tea __ with milk and sugar.
If you keep on, you’ll succeed___.
Charles Babbage is generally considered __ the first computer.