Question

Every year lots of trees _______ to make our country more beautiful.

A．is planted

B．was planted

C．are planted

D．were planted

Answer 1

C

每一年有許多樹被栽，根據此意可以判斷出本題使用的是一般現在時的被動語態，結構為be+過去分詞，本題的主語為復數，故用are planted，故本題選C。