____ on ten years of observation and study, the story shows that everyone dreams every night, whether they realize it or not.
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.
— Did you know any French before you arrived in Washington? — Never ______ it, actually.
Only after her mother came to help her for the first few months _____ to begin her propjet.