27. The wallet ______ before Tom arrived at the airport.(A) had stolen　(B) had been stolen　(C) has b

問題詳情

27. The wallet ______ before Tom arrived at the airport.
(A) had stolen　
(B) had been stolen　
(C) has been stolen　
(D) was been stolen

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

上一篇 : 11.地球半徑R，萬有引力常數G，一質量m的人造衛星，離地面高R處繞行，已知地面重力場強度為g，定無窮遠處的位能為零，則人造衛星之位能為何？-1 -1(A) (B) (C) -mgR (D)
下一篇 : 【題組】48. In some countries such as China and India, ivory has become regarded as ______ for the middl