問題詳情
25. Nobody knows ________. It remains a mystery.
(A) what did it happen to him
(B) who made those crop circles
(C) how could he get into the house
(D) will aliens ever visit our planet
(A) what did it happen to him
(B) who made those crop circles
(C) how could he get into the house
(D) will aliens ever visit our planet
參考答案
答案：B
難度：適中0.577143
統計：A(100),B(505),C(78),D(68),E(0)
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