—Would you have come to his help, had you been free? —Yes. But I______ engaged. 

What present will you have ______ to your father tomorrow?

— What were you doing when I phoned you last night?— I ______ my homework and was starting to surf the Internet.

--- I’ll come to see your performance at 9:00 tomorrow evening.-- I’m sorry, but by then my performance ____ and I ____ reporters in the meeting room.

With the development of science and technology, people’s life _______ in the past few years.