問題詳情

15. Ever since they _______ the new recycling program, the amount of waste generated by the office has significantly decreased.
(A) implement
(B) implemented
(C) have implemented
(D) implementing

參考答案

答案：B
難度：簡單0.725
書單：沒有書單，新增

用户評論

【用戶】熊熊讚

【年級】高三下

【評論內容】since 表示「自從」：子句A  since  子句B .  =  Since  子句B , 子句A .子句A 若是「現在完成式」，子句B 則用「過去簡單式」，所以答案是 (B) implemented。選項(A) implement 及 選項(C) have implemented 的時態不正確。選項(D) implementing 讓句子缺乏動詞，不合文法since後面則接一個較具體的時間點 或過去式的副詞子句 :Jerry and Mike have lived in Taipei since they were college students

【用戶】熊熊讚

【年級】高三下

【評論內容】since 表示「自從」：子句A  since  子句B .  =  Since  子句B , 子句A .子句A 若是「現在完成式」，子句B 則用「過去簡單式」，所以答案是 (B) implemented。選項(A) implement 及 選項(C) have implemented 的時態不正確。選項(D) implementing 讓句子缺乏動詞，不合文法since後面則接一個較具體的時間點 或過去式的副詞子句 :Jerry and Mike have lived in Taipei since they were college students