问题
选择题
--Tree Planting Day is coming. Do you plant trees in spring?
---Yes, many trees ________ in our city every year.
A．are planting
B．are planted
C．were planted
D．will plant
答案
答案：B
本题的含义是每年在城市要栽许多树，本题的主语是动作的承受者，故本题用被动结构，结构为be+动词的过去分词，每一年表示一般的情况，故用are planted，故本题选B。