问题

________ should not to be allowed to work at night.
A:Sixteen-year-olds
B:Sixteen-years-old
C:Sixteen yearolds
D: Sixteen-years-olds
B:Sixteen-years-old
C:Sixteen yearolds
D: Sixteen-years-olds
正确答案是:
同类题型
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There’s enough time for you to go to the airport.You hurrynow.
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