—Mr. Li, let’s go fishing this weekend with Lao Wang, shall we?—I’d love to, but nobody knows if he _______ free then.

 — Is your father in?— No, he ______ for three hours.

–Would you like to watch the three-D film Titanic with me?--Certainly. I don’t mind seeing it again although I _____ it twice.

 Progress ____so far very good and we are sure that the work will be finished on time.

Excuse me, where __________? Do you know? Yes, I know where ________.