用is are 填空
问题描述：
用is are 填空
Everyone _______here.
sam_______not here.he_____at school.
I______twelve.you_____twelve,too.
______your mother a teacher?
my brother and sisters_______all students.
答
1,is Everyone ____is___here.2,is;isSam____is___not here.he__is___at school3,am;are___am___twelve.you__are___twelve,too.4,is___Is___your mother a teacher?5,aremy brother and sisters____are___all studen...