—Do John and Betty have a child？ —Yes. They _______ for twenty years.

I think Kate will come if she _______ free this afternoon.

—Do you miss your parents far away? —Yes, very much. They _________ the hometown for over two years.

 The students       the Art Festival when I passed by their school.

—I called you yesterday evening, but there was no answer.—Oh, I’m sorry. I ________ dinner in my friend’s home.