問題詳情
57. Privacy advocates are troubled by the array of video cameras, motion detectors and other sensors ______ the shopping aisles.
(A) monitor
(B) monitoring
(C) monitored
(D) to monitor
參考答案
答案：B
難度：簡單0.715631
統計：A(46),B(380),C(46),D(32),E(0)
用户評論
【用戶】Hsu Baleng
【年級】高一下
【評論內容】分詞構句，刪除連接詞，將從屬子句動詞改成Ving或Ved