My best friend, Marco, only wrote one _____ for that?

There are many ____ that I don't comprehend.

That is a ____, don't you think?

That is such a ____, is it not?

Which one is plural?

Ghosts and vampires and ghouls are interesting ____ for many movies.

Those ____ interest me.

Those ____ interest me.

That ____ interests me.

Not all ____ are succulents.

I have two ____ that I need to trim.

I have one ____ that I need to trim.

How many ____ do you have?

How many ____ did she have?

I need help with one ____.

They are having problems with a ____.

They are having problems with some ____.

In a time of a physical ____, remain calm.

She has four physical ____ to see her doctor about.

We will only discuss one ____.

There were six ____.

We talked about the first and second ____ in the meeting.

I have a ____ infection on that.

Many ____ can be found in those.

One ____ caught our attention.

It had a clear ____ that we studied assiduously.

It will definitely contain a ___ .

That will hold the ___ together in the atoms.

That will hold the ___ together in the atom.

The compound _____ produced in cold-fusion reactions contain a small number of neutrons.

It has a solid _____.

They have solid _____.

This one _____ is problematic.

These many _____ are problematic.

I think there are twenty-two ____ in that group.

I think they have four _____ in their barn?

We talked to two ____ about the benefits of the class.

An ____ of the Ricci School of Mathematics was Marco Bruni.

We saw eight _____ in the aquarium on our field trip

Three ____ are all I need for this recipe.

Which one is singular?

Which one is singular?

Which one is singular?

Which one is singular?

Which one is plural?

Which one is plural?