【Mi de Chen】評論

題目: In 2016, the city council decided to put its 85,000 pigeon population on a birth control pill to block the formation of eggs in birds. Starting from April 2017, the pills were placed in 40 bird feeders   20     throughout the city.這計劃從2017年四月開始實行，城市各處總共20.架設了40個餵食器，裡面皆放有避孕藥。B 20. (A) installing            (B) installed          (C) to install             (D) having installed本格修飾前方的bird feeders，原句為the pills were placedin 40 bird feeders (which were) installed throughout the city，省略關係代名詞和be動詞後，...

【有哥在】評論

20.原題句子可拆為兩句表示:    (1) ...