It is a pencil case., Is it a book?, Is it a pen?, Is it a green rubber?, It is a blue pencil., No, it isn't., Yes, it is., It is glue., Is it red paint?, Is it an old book? Yes, it is. , Is it a new painbrush? - No, it isn't., It is a yellow umbrella.,

AS1. Unit 2. It is.... Is it....?

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