I have no desire other than to lead a quiet life, ______ from anxiety.

You can see the stars on a clear night，but in the daytime theyare _______.

Yesterday I met a(n) _____ teacher by chance who taught me English in the university three years ago.

Einstein’s Theory of Relativity is so ________that most of us can not understand it.

Each of us has to write a ______ report every three weeks.