单项选择题

As an outstanding scholar, he has become () to the research team.

A. superior
B. senior
C. indispensable
D. independent

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Comparing the original and the revised version of the novel, I prefer the()one.

A. latter
B. last
C. late
D. later
单项选择题
I don’t know you want to keep the letter. I’ve () it up.

A. torn
B. given
C. broken
D. disposed
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