That"s a library. ______ not a science lab.[ ]A. It B. It"s

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That"s a library. ______ not a science lab.[     ]
A. It
B. It"s
C. Its
D. That"s

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举一反三

Maria, could _______ help _______, please?[     ]
A. you; I
B. you; me
C. I; your
D. me; you

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Our teacher makes _____ very tired.

[     ]
A. he
B. my
C. us
D. we

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Mrs. Liu teaches _______ English. We like ______ class very much.[ ]
A. me; his
B. me he
C us; his
D. me ;him

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- Oh,  these presents are so nice.
-  The CD is from Betty and the books are from________.[     ]
A.  I and Helen
B.   Helen and me
C.   Helen"s and mine
D.   Helen and I

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—Are _____ their books?
—Yes, _____ are.[ ]
A. these; their
B. those; their
C. this; they
D. those; they

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