December 17, 2011 was a sad day for the North Koreans, ______ their top leader Kim Jung-ill passed away unexpectedly.
Collecting stamps ______ my father’s favorite hobby and reading novels ______ my mother’s favorite pastime.
In the last year, China has sent up many ______ satellites, _______ a weather satellite, a science satellite, a TV satellite and so on.
--- Don’t do that again. Don’t you think it _______? --- It maybe _______ to be successful.
Titanic is the most exciting film _______ I have ever seen.
______ has helped to save the drowning girl is worth praising.