Dr. Nien was famously reluctant to have his biography written. But ____

問題詳情

22. Dr. Nien was famously reluctant to have his biography written. But _____ Nien since 1990, Mr. Feng, the author of a critical study of Dr. Nien’swork, received not only his friend’s permission but access to a large collection of his manuscripts.
(A)have known
(B)having known
(C)knew
(D)to know

參考答案

答案：B
難度：適中0.675439
統計：A(22),B(77),C(6),D(3),E(0)

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