53. If I _____ the truth earlier , I would have given you a hand for sure.

(A) knew

(B) had known

(C) have known

(D) would have known

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統計： A(10), B(37), C(3), D(2), E(0) #3348683

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1. 題目解析 這道題目考察的是虛擬語氣...
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