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How long have you _____ the book?
A. borrowed B. bought C. lent D. kept
--How long have you ________ the book?
--For a week．
A．borrowed B．kept C．lent D．bought
How long have you ________ the book?
[ ]
A．bought
B．borrowed
C．lent
D．kept
－How long have you ________ the book?
－Two weeks.