单项选择；从A、B、C、D四个选项中选出最佳选项。—Howoldisyourson?—

问题详情：

单项选择；从A、B、C、D四个选项中选出最佳选项。

—How old is your son?

—_________. We had a special party for his _________ birthday yesterday.

A , nine B. Ninth, nine C. Nine, the ninth  D. Nine, ninth

【回答】

D

知识点：数词

题型：选择题