Matching singular and plural sentences Read each sentence and look for (= procura) its matching singular or plural form. It is based on "this, that, these, those" and "a/an/-". Tools A B What is this? What are these? This is a pen. These are pens. That is an egg. Those are eggs. Is that a cat? Are those cats? These aren't motorbikes. This isn't a motorbike. What are those? What is that? This boy is from Mexico. These boys are from Mexico. Is that your friend? Are those your friends? That's a dog. Those are dogs. This isn't a cellphone. These aren't cellphones.