Danh - động - tính - trạng - đơn

I saw ___ elephant at the zoo.

• a

• an

• the

Can you pass me ___ salt, please?

• a

• an

• the

She is ___ best student in the class.

• a

• an

• the

The keys are ______ the drawer.

• at

• in

• on

That’s ___ interesting book I told you about.

• a

• an

• the

I have two ___ (apple/apples) in my bag.

• apple

• apples

There is some ___ (water/waters) in the bottle.

• water

• waters

She bought three ___ (book/books) yesterday.

• book

• books

Do you have any ___ (money/moneys)?

• money

• moneys

I need a ___ (piece/pieces) of paper.

• piece

• pieces