—How long _______it _______ you to work out such a difficult problem? —About thirty minutes. A. did… take B. does… take C. did…cost
—You look very beautiful. — _________.
Peter and I _________ in Room 807.
— ______ are the students? —They are on the playground.
—______ on the desk?—There are some pictures.
There is _______big desk in our classroom. _______desk is for our teacher.