plenty of teacher ------( be) in great need in this new school.请问如何填空

plenty of与a plenty of a plenty of 和 plenty of plenty of teacher ------( be) in great need in this new school.请问如何填空 plenty of和plenty的区别加急 plenty 和 plenty of 的区别 以 plenty of 造句 plenty of wish plenty of是什么词 plenty of time 中文 plenty of的用法 plenty of 等于什么 plenty of 等于什么 plenty of 的用法 lots of=plenty of plenty of和a plenty of的区别是什么 Plenty of happiness is my Plenty of happiness is my the differences between a plenty of and plenty of A plenty of 和 plenty of 有什么区别