Singular and Plural

What do you have in your bag?

• I have a book.

• I have an book.

• I have book.

• I have a books.

What do you have in your pocket?

• I have a ID card.

• I have an ID card.

• I have ID card.

• I have an ID cards.

What do you have on your table?

• I have a umbrella.

• I have umbrella.

• I have an umbrella.

• I have an umbrellas.

What do you have in your hand?

• I have a keys.

• I have an keys.

• I have keys.

• I have an key.

What is it?

• It's a wallet.

• It's an wallet.

• It's a wallets.

• It's wallets.

What are they?

• They are a pen.

• They are an pen.

• They are an pens.

• They are pens.