This is _________ my father has taught me-to always face difficulties and hope for the best.
how
which
that
what
(陕西)No sooner ________ stepped on the stage than the audience broke into thunderous applause.
Only when you leave school________how much you love it.
So mysteriously ______ missing that many puzzles wait to be solved.
For a moment nothing happened, and then ______ all shouting together.
---I have finished my homework. ---___________.Let’s go to play tennis.