. Don't go too far into the sea, children, or the waves will _____ you off your feet.
Mr Li, who is in charge __ our class, will have a talk __you.
___ the beginning of the story, the writer wrote this word “WHAT?”
Don’t read ___ a poor light, otherwise you will get near-sighted.
Could you tell me what Americans live ___?
Little Bob is a very ___ boy.