It used to be thought _____ the Earth was flat.
—May I have the honor of dancing with you?—______.
I ____ along the street looking for a place to park when the accident ____.
What a table! I’ve never seen such a thing before. It is _____ it is long.
-- How long do you think it will be ____ the USA recovers from the losses of the financial crisis? -- Perhaps four or five years.