英语周报高二课标2020-2021第十五期答案

英语周报高二课标2020-2021第十五期答案，小编收集了英语周报高二课标2020-2021第十五期答案的相关答案，没有答案的敬请期待！完整版的周报答案关注wx号：趣找答案

1. We are confident that the environment ________ by our further efforts to reduce production.

A . had improved

B . is improved

C . will be improved

D . improved