问题
选择题
－How old is your daughter ?
－ . We had a special party for her party yesterday .
A. Nine , nine. B. Nine , ninth . C. Ninth , ninth .
答案
B.
nine是基数词，只表示数目，ninth是序数词，表示顺序。她九岁，用nine，为她的第九个派对用ninth，故B 。
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