問題詳情

20. Not until the early 1800’s, when the value of field corn asgrain and livestock feeding was recognized, ____________.
(A) increasing acreage began
(B) its acreage began to increase
(C) did its acreage begin to increase
(D) with the beginning of increased acreage

參考答案

答案:C
難度:適中0.468254
統計:A(30),B(60),C(118),D(24),E(0) #
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