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一Is that your book? 一Yes___________.
A．it is B．it isn’t C．it’s
-----Is that your book ? ------No, ________ .
A. they are B. they aren’t C. it is D. it isn’t.
---Is that your book?
---Yes, ________.
A．it is
B．it isn’t
C．it’s
D．this is
用所给词的正确形式填空。
－Is that your book?
－Let ________ (I)see．