-Why do you go to the dancing hall three times a week? -I've taken a(n) ______to dancing.
Please ______ the traffic regulations.
Every boy and every girl ______ that each day and each hour brings ______ duty.
—What do you think of the meal we have just had?—It is well worth ______ is changed for it.
It was foolish of him to ______ his notes during that important test,and as a result,he got punished.
The instructor asked us to list anything in our past that we felt ______ of,regretted and read our lists aloud.