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一It’s ．
A．John B．John’s C．Johns’
----Is this room yours?
----No, it's ______.
[ ]
A. Mike's and John's B. Mike and John's
C. theirs' D. Mike and Johns'
－________ idea did you take?－John's.
I don't think Jim's writing is ________ than John's.
[
A
－Is that watch John's?
－________