问题描述:
The farmers are planting trees on the hill near their village.They want to _______the environment.
A.protect B.improve C.recycle D.set up
为什么不能为A,或 save?
A.protect B.improve C.recycle D.set up
为什么不能为A,或 save?
问题解答:
我来补答展开全文阅读