It is obvious to the students ______ they should get well prepared for their future.
I don’t think it easy, even if we work hard, ______ the South Korea and the North Korea to sit down to talk at present.
No student ______ go out of the school campus after 10:00 at night without permission according to the school regulations.
“Ungelivable” is so new an English word coined on the Internet ______ is forbidden to appear in official media or documents at present.
--How do you find the health club? -- I ______. Everyone is saying its management is going from bad to worse.
Talking about his success, the famous scientist said, “I’ve been lucky ______ there are many people who have helped me”.