David lives on the ________ floor. It is too high, so he has to take a lift every day.

There are floors in my house and my bedroom is on the______floor.

______ Thanksgiving Day,Americans usually eat the pies ______ pumpkins.[ ]

______ can you finish your homework, Ben?—In thirty minutes.[ ]

Wow! You look different! You wear glasses.— Yes, I did. But now I am wearing contact lenses(隐形眼镜).