proper variety造句

I'd like to plant some, but I want the proper variety.
The valuative criterion of properness expresses the intuition that in a proper variety, there are no points " missing ".
"And once you get into the flatter terrain, you get the proper variety that you need to cover different circumstances, " he continued.
If an elderly person doesn t have consistent access to enough fruits and vegetables and the proper variety of nutrients, as is the case in rural food deserts, it makes them more at risk for health problems and future ailments.
It's difficult to find proper variety in a sentence. 用proper variety造句挺难的