Lots of trees ________in our city over t
问题:
Lots of trees ________in our city over the years. It is becoming greener and greener!
A.are planting
B.have planted
C.will be planted
D.have been planted
Lots of trees ________in our city over the years. It is becoming greener and greener!
A.are planting
B.have planted
C.will be planted
D.have been planted