20. The more green tea a man drank, _____________ he was to have gum disease.
(A) than the likely
(B) it was likely
(C) the less likely
(D) less likely than

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統計： A(4), B(4), C(137), D(6), E(0) #1575957

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#2198175
gum disease齒齦疾病
(共 17 字，隱藏中）
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