【题目】The number of the children who_______ the iPads______ growing all the time.
A. own, areB. owns, is
C. own, isD. owns, are
在线课程【答案】C
【解析】
考查主谓一致。句意：拥有ipad的儿童数量一直在增长。who_______ the iPads是一个定语从句，先行词是the children，关系词在从句中作主语，代替先行词，the children是复数，谓语动词用复数；The number of表示“……的数量”，谓语动词用单数，故选C。