—How long _______it _______ you to work out such a difficult problem? —About thirty minutes. A. did… take B. does… take C. did…cost
--- Is this a map? --- Yes, _____.
--- What’s this _____ English? --- It’s _____ English-Chinese dictionary.
My brother can _____ a horse.
Britney Spears is American. Spears is her _____ name.
--- _____ is your mother? --- She is 30.