30.
(A) knew
(B) know
(C) have known
(D) had known
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統計: A(108), B(69), C(48), D(32), E(0) #817047
統計: A(108), B(69), C(48), D(32), E(0) #817047
詳解 (共 2 筆)
#1262701
與過去事實相反的假設語氣 後面有might 所以可以得知if 後面要用過去簡單式
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#4798079

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