A huge number of trees __________ in this area.
A: has been planted
B: have been planted
A: has been planted
B: have been planted
举一反三
- More than 3000 trees ___ in this area by the end of last year. A: have been planted B: had planted C: were planted D: had been planted
- How many trees ____ this year? A: are planted B: will plant C: have been planted D: planted
- With lots of trees and flowers （）here and there, the city looks very beautiful. A: having planted B: planted C: have been planted D: to be planted
- —Your school looks beautiful! —Yes. Many trees and flowers ______ last year. A: were planted B: planted C: C. have been planted
- One-third of the area _______ covered with green trees, and about seventy percent of trees _______ been planted. ( ) A: are; has B: is; has C: are: have D: is; have