初二英语选词填空说明理由
Thefifthgradepupilknowsthatthetextbooksforthesixthgradewillbemoredifficultthan____heisusingnow.
A.THATB.THEONEC.THOSED.ONES
为什么是theone,为什么theone指代的是thebook而不是复数?