Many trees in this area have been __ to make room for buildings, which has worsened our living environment.
举一反三
- 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
- One-third of the area _____ covered with green trees. About seventy percent of the trees ____ been planted. A: are; have B: is; has C: is; have D: are; has
- Never before ______ as united as it is today. A: our country has been B: has our country been C: has been our country D: have our country been
- A huge number of trees __________ in this area. A: has been planted B: have been planted
- Our government has been ________ in helping the peasants to improve their living conditions.