--- How _____ hours do you sleep a day?--- Well, about eight hours. But how _____ sleep do we students really need?
This is a ____ . Those are some ______, too.
—Your watch is very nice. —_____.
— Is that _____ English book? —Yes, it is.. It’s ____.
—_____? —It’s 0713-3735009
— _____ you spell “photo”? —P-H-O-T-O.