問題詳情
31.You have failed two tests.You’d better start working harder,____you won’t pass the course.
(A)and
(B) so
(C) but
(D) or
(A)and
(B) so
(C) but
(D) or
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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