問題詳情

9. The unmanned machinery test will start ______ five minutes, make sure to ask the authorizedpersons away _____ engine control room.
(A) on ; in
(B) in ; from
(C) at ; off
(D) about ; out 

參考答案

答案：B
難度：簡單0.75
統計：A(0),B(3),C(1),D(0),E(0)