is, thirty, ciass, students, are , there, our(连词成句）

is, thirty, ciass, students, are , there, our(连词成句）
is, thirty, ciass, students, are , there, our(连词成句）

is, thirty, ciass, students, are , there, our(连词成句）
There are thirty students in our class.
哪个is应该是in,应该是题目出错了把

there are thirty students in our class.
你那个不是is吧，一个句子里怎么可以有两个系动词呢，那样就不是一句话了。

茜

there are thirty students in our class.