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Excuse me, Mr Brown, is this ______ umbrella

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The teacher wants you to return that book of ______ that he lent you.

Mary was ______ in the exam.

A. a first
B. first
C. the first
D. one

All ______ worries him is his father"s objection to it.

either, neither, no one, none I don"t agree to ______ of the two proposals.

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