-- _____is that used for?---_____ the floor.
Not until I read your letter ________ the true state of the affairs.
________ going to the program If You Are the One,she knew she had to be there or her mother would be unhappy.
—Mary,turn the heat down,________ burn.—OK.Mum.
Seldom ________ TV when he studied in senior high school.
Everything,unless otherwise ________,will go on as planned.