题目内容
—This is the first time for me to hold the ________ birthday party for an old man.
—I am not busy. Let me help you.
| A．ninth | B．nineteen |
| C．ninety | D．ninetieth |
D
解析试题分析：—这是我第一次为老人举办90岁的生日。—我不忙，让我来帮助你。根据句意此空指“第九十”，所以应用序数词ninetieth，故选D。
考点：考查数词的用法
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