問題詳情

28.Beware of strangers at the airport and do not leave your luggage __________.
(A) unanswered
(B) uninterested
(C) unimportant
(D) unattended

參考答案

答案：D
難度：適中0.666667
統計：A(1),B(0),C(0),D(4),E(0)