Alotoftrees
問題詳情： Alotoftrees______onthehillyesterday. A.areplanted B.willbeplanted C.havebeenplanted D.wereplanted【回答】 D解析:考查被動語態。由時間狀語yesterday可知，用一般過去...
Alotoftrees
問題詳情：Alotoftrees________aroundhereeveryyear,andwecanenjoyfresherairnow. A.wereplanted B.areplanted C.willplant D.areplanting【...