【系統公告】頁面上方功能列及下方資訊全面更換新版，『舊用戶且擁有VIP』可再切回舊版。 前往查看

未分類題庫下載題庫

上一題
【已刪除】30. To prevent sewage from entering the waterways and protect public health, the city councilman strongly demanded that the sewage system _________ in three months.
(A)improved 
(B)to improve 
(C)was improved 
(D)be improved

答案：登入後觀看
難度： 簡單


【已刪除】30. To prevent sewage from entering..-阿摩線上測驗