A: Is that a pencil?              B: ______ .

          A. Yes, it is    B. Yes, it's                C.  Yes, that is             D. No, it is.

Is that his pencil case?

1. A.
   Yes, it's her pencil case．
2. B.
   No, it's a pencil．
3. C.
   Yes, it's your pencil case．
4. D.
   No, it's my pencil case．

--Is that a pencil-box?

--Yes, ________.

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--Is that a pencil-box?

--Yes, ________.

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