生于1156
幼苗
共回答了16个问题采纳率:93.8% 举报
( Are)the keys ( on)the desk?
It's (not ) ( under) the chair.
I think (it's)(in ) your grandparents' room.
或I think (they're ) ( in) your grandparents' room.
如果整个三个句子都是关于keys的,那么第二句也应该为复数,既然您给的句子不是,那我就认为这三句话彼此是独立的.那么第三句用单数或复数都有可能.
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