that boy in our class is japanese改成算数句

题目

that boy in our class is japanese改成算数句
any,playgrounds,school,in,are,your,there连句
下面的句子有一处错误,改正
they are our maths' teachers.
we must listen our teachers carefully in class.
mr black is jack's and mary's father

答案

"算数句"没听说过
Are there any playgrounds in your school?
they are our maths teachers
we must listen to our teachers carefully in class
mr black is jack and mary's father