摘要： - Is it orange? - No, it isn’t. It’s apple. A. an; a B. a; a C. an, an
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—Is that an orange?
—____. It’s an apple.
A. Yes, it is. B. No, it isn’t. C. No, that isn’t.
—Is that an orange?
—____. It’s an apple.
A. Yes, it is. B. No, it isn’t.C. No, that isn’t.
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