問題詳情
9. During take-off, the use of laptops and cellphones _______, so make sure they are all turned off.
(A)not allowing
(B)aren’t to allow
(C)is not allowed
(D)does not allow
(A)not allowing
(B)aren’t to allow
(C)is not allowed
(D)does not allow
參考答案
答案：C
難度：簡單0.730453
統計：A(33),B(75),C(355),D(23),E(0)
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