Do you think doing lots of homework is good for a _____ child? sA . seven years old B seven-years-old C seven-year-old D seven-year-old's

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Do you think doing lots of homework is good for a _____ child? sA . seven years old   B seven-years-old  C seven-year-old  D seven-year-old's

Do you think doing lots of homework is good for a _____ child? sA . seven years old B seven-years-old C seven-year-old D seven-year-old's
Do you think doing lots of homework is good for a _____ child? s
A . seven years old B seven-years-old C seven-year-old D seven-year-old's

Do you think doing lots of homework is good for a _____ child? sA . seven years old B seven-years-old C seven-year-old D seven-year-old's
C
seven-year-old 七岁的,做定语的时候要加连接符“-”,同时year要用单数.
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C 固定的 不能改

选C。当有连接符的时候year 这个名词不需要加s,空格前面有个a,所以后面接的是一个单词,连接符连接的词算是一个单词,所以选C
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