The manager promised to keep us______ of how our business was going on.

The beauty of Hangzhou is ______ what words can describe.

—These days，he has stayed up late into night in order to get good marks in the following monthly test.—It's no ________ that he seems tired and asleep in class every day.

It seems_______ to our modern world, where everything is a rush and we try to cram as much into every minute as possible, but if not busy, we feel unproductive and lazy.

He knows several languages, ______, he knows English and Japanese.