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
A: are; have
B: is; has
C: is; have
D: are; has
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 huge number of trees __________ in this area. A: has been planted B: have been planted
- 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
- Many trees in this area have been __ to make room for buildings, which has worsened our living environment.