题目内容：

1.A:（ ）you a teacher?B:Yes,I( ).2.Everyone( )here today.Our Chinese techer( )here,too.
3.What ( )thirty minus righteen?
4.A:( )these his shoes?
B:No,they( )not.His( )here.
5.A:Which class ( )you in?
B:I( )in class 3.
括号内用am,is,are填空