初中英语数词单选题

—Excuse me. How far is the post office from here?
—It’s about _______walk.
A. ten minute                                     B. ten minutes                                         C. ten minutes’

--- Do you know the boy________ is sitting next to Peter?
--- Yes. He is Peter’s friend. They are celebrating his ________ birthday.

A．who; ninth

B．that; nineth

C．/; nineth

D．which; ninth

Our teacher asked us to write a _________ letter in English this morning.

A．ninety-word	B．ninety-words
C．ninety word	D．ninety words