根据问句选择合适的答语，把序号填在括号里.
Thanks ______ your present.
----What _______ do you speak? ---- I speak Chinese. A. languageB. science C. subject
---- Is that your watch over there? ----No, it’s _______ watch. A. my B. this C. my sister’s
----It is _________ ruler. ---- It is not __________ eraser. A. /, anB. a; anC. the; the
----Hello, Lin Tao. How are you? ---- _________.
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