—Must I return the book this week?— No, you ____. You can ____ it for 20 days.

--- I spent two weeks in London last summer. --- Then you must have visited the British Museum during your stay, _______ you?

From March 13th, 2013, anyone under the age of 14 ______ go into Disney’s US parks alone.

—What do you need to say?—No person         smoke or carry a lighted cigarette in this special room.

— Must we wear our school uniform this afternoon?— No, you. All of us will go on an outing.