---Oh, it’s five o’clock alreay. I must be going.----______?
______ is known to all, Taiwan is a part of China.
It was ______that all of us were tired out when we arrived.
Most people advise that students’ heavy burden __________.
The _______ scene in the earthquake-stricken area made some people _______ .
The earliest influences upon children will have the strongest effects ________their future.