Too many cars are_____to be environment,so we'd better take the bus more.( )
A. |
useful |
B. |
harmful |
C. |
helpful |
D. |
meaningful |
Too many cars are_____to be environment,so we'd better take the bus more.( )
A. |
useful |
B. |
harmful |
C. |
helpful |
D. |
meaningful |