PaperbooksstillplayanimportantroleintheUStextbookmarket,withdigitaltextbookslessthan5percentofthetotal.A.composingofB.makingupC.consistedofD.accountedfor

Question

Paper books still play an important role in the US textbook market, with digital textbooks __________ less than 5 percent of the total.
A.composing of
B.making up
C.consisted of
D.accounted for

Answer 1

B