题目内容
Lucy and Lily are both ________ girls.
- A.twelve years old
- B.twelve year old
- C.twelve-years-old
- D.twelve-year-old
D
解析:
twelve-year-old作定语,修饰girls;
year用单数。
解析:
twelve-year-old作定语,修饰girls;
year用单数。
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