One/ones

the are several first aid kists in the shoop. You want one of them, but it must be a certain colour. You say, I would like the blue _______, please.

the are several first aid kits in the shop, but this time you want more than one kit. You say, I would like the blue _______, please

You need several plasters, but you only want the large sizes. You say, I would like the large ______, please.

You ask for a plaster for your wound, and your mum shows you three sizez: medium, large and small. You tell her, I would like the large ______, please.

There are several first aid courses, but you would like the one that meets for three hours each day, not just one hour, you tell the clerk, I would like to take the long ______, please.

You are buying a notebook for your first aid course, and you have already picked one out. You say, I would like this ______, please.

You are picking out some pencils for the same course, and you are going to need several. You say, I will take four yellow ______, please.