9. The researcher said that it ______patience and perseverance to finish the research.
(A) got
(B) took
(C) spent
(D) cost

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統計： A(3), B(33), C(7), D(0), E(0) #1891292

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#3739976
研究者說他付出了耐心和堅持來完成這篇研究...
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