We are confident that the environment___
问题:
We are confident that the environment________by our further efforts to reduce pollution. (2013·辽宁,30)
A.had been improved
B.will be improved
C.is improved
D.was improved
We are confident that the environment________by our further efforts to reduce pollution. (2013·辽宁,30)
A.had been improved
B.will be improved
C.is improved
D.was improved