Everyone of us has many responsibilities ______us．So we must work hard．

There ______ a school sports meet next Wednesday .-Thanks for telling me the news.

ing to a recent U.S. survey, children spent up to 25 hours a week ____ TV.

The hostess told us it was that caused her to serve dinner an hour later than usual.[ ]

_______ is known to the world, the Chinese in many places _______ the old tradition.