搜题
王老师:19139051760(拨打)
题目  更新时间:2023/4/3

He cannot be tired _______ he has walked only half a mile. 


(A) :since
(B) :whether
(C) :when
(D) :as long as

[参考答案:A]

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继续教育学院

王老师:19139051760(拨打)