trees have been planted near here, so the air is very fresh.
A. Two hundreds             B. Hundred of          C. Hundreds of          

He lives on ________ floor in that building.

My brother is ____ years old．Today is his _____ birthday．

-- What can I do for you, Madam?
--I’d like ________.

________ of giant pandas is getting _________ because their living areas are becoming farmland.

I have ______ money, and I can’t afford the house.

— Can you see ____ sheep eating grass on the hill?
— Sure I can.

December is        month of the year．
A． the twelfth         B． twelve          C． the twelve

After playing football about half an hour, the students took _________ rest.

In our class, about        of the students are girls.
A．three fifth          B．third fifths         C．three fifths