In the US I live on the first floor, but in the UK. The first floor is the floor.
( ) — I come in? —Come in,please. A. Do B. Am C. May
( ) Look at sun. It's big and red. A. a B. the C. /
( ) — pens do you have? —One. A. How B. How much C. How many
( ) —How do we go to the park? —Let's go there bus. A. on B. in C. by
( )—I can't find my ball,mum! —It's the door. A. of B. behind C. up