阿摩線上測驗
103. The keynote speaker for the upcoming agricultural technology summit is a highly ______ expert in sustainable crop irrigation.
(A) regard
(B) regards
(C) regarding
(D) regarded
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統計： A(16), B(6), C(37), D(84), E(0) #3805291
統計： A(16), B(6), C(37), D(84), E(0) #3805291
