---____your mother a worker？---Yes, she_____.A. Is, is B. Does, does C. Do, do
–Is this your pencil? ——_______________. A. Yes, it is. B. Thank you.
--_______________. ——Yes, Miss Li. A.Please close the door. B. Where is it?
---This is you,Bobby. ——Thank you. A.for B. Helen
--Is this ______ schoolbag? ——Yes. A. me B. your
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