問題詳情

39. To protect our intellectual property, all visitors __________ to present their identification with aphoto.
(A)ask
(B)asking
(C)to ask
(D)are asked

參考答案

答案:D
難度:簡單0.757143
統計:A(21),B(11),C(2),D(106),E(0)

內容推薦

內容推薦