阿摩線上測驗
9. The vice president found herself grappling with the uncertainty ____ the newly implemented policy, designed to streamline operations and cut unnecessary expenses, would actually yield the intended financial benefits.
(A) of whether
(B) if whether
(C) whether
(D) whether with
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統計： A(48), B(4), C(30), D(11), E(0) #3421544
統計： A(48), B(4), C(30), D(11), E(0) #3421544
