题目内容：
How old was the baby when he learned to say that word correctly?
A． About 18 month B． About 21 month
C． About 24 month
D． About 12 month
参考答案：
答案解析：
单选题：How old was the baby when he learned to say that word correc
- 题目分类：公共英语三级
- 题目类型：单选题
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B． About 21 month
C． About 24 month
D． About 12 month