问题
选择题
We are confident that the environment ________ by our further efforts to reduce pollution.
A．improves
B．will be improved
C．has improved
D．was improved
答案
B
题目分析：句意：我们确信经过我们减少污染的进一步努力，环境会被改善的。根据are confident我们现在确信， by our further efforts通过进步的努力，那环境的改善应是在将来，又因 主语environment 与谓语improve之间是被动关系，故用一般将来时的被动式。故选B。
考点：