Help otherswhenever you can _______ you will earn respect from others without difficulty

The Southern States wanted to ______ the Union, so the American Civil War ______. [ ]

It ________last night_____ Tom saw an interesting film in Dongfeng Cinema.

Students shouldbe encouraged to use ________ Internet as ________ resource.

It ______ long befor the Chinese Space Center ______ Shenzhou VII Spacecraft,becoming the third country to send an astronaut to “walk” in space after the United States and the former Soviet Union (now Russia)