They do eye exercise twice a day,so ( ) of them ( ) glass

They do eye exercise twice a day,so ( ) of them ( ) glass
They do eye exercise twice a day,so ( ) of them ( ) glass

They do eye exercise twice a day,so ( ) of them ( ) glass
They do eye exercise twice a day,so ( few) of them (wear ) glass

They do eye exercise twice a day,so ( none) of them (wear ) glass
没人带眼镜！！

none wears

few/none wear glasses