問題詳情
5. February normally has twenty-eight days, but every fourth year, ______ has twenty-nine.
(A) there
(B) its
(C) is a leap year
(D) a leap year, it
(A) there
(B) its
(C) is a leap year
(D) a leap year, it
參考答案
答案：D
難度：簡單0.826772
統計：A(7),B(2),C(5),D(105),E(0)
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