I got a beautiful bike on ______ birthday. Ilike it very much.

A. fifteenth
B. fifteen
C. my fifteen
D. my fifteenth

Although I failed four times, my father encouraged me to have a _____try.

A. third
B. fourth
C. fifth
D. second

—Here we are. Where does your cousin live, Tom?—Oh, he lives on the ________floor.

A. two
B. twice
C. second
D. twos

Now,everybody, please turn to Page ________ and look at the ________ picture.

A. Fifth;five
B. Five;fifth
C. Fifth;fifth
D. Five;five

— We’ll be back for our school’s ________ anniversary ceremony.—I see. That means you'll have a get-together with your classmates in ________ years.

A. fifteen;seven
B. fifteenth;seven
C. fifteen;seventh
D. fiveteenth;seven

请写出以下基数词的序数词。5

请写出以下基数词的序数词。eleven

请写出以下基数词的序数词。twenty-one