Professor Wang is a friend of mine who works in a ________ school.

— Mr White has been working all the morning with no rest.— He is a(n) ________ man. He never looks tired.

21st century school edition is ____a newspaper .It helps us to improve our English a lot .

The poor man , ________，ran out of the dark cave.

I really don’t want a bigger house— I’m __________ with what I’ve got.