将下列句子改为被动语态.1.We must plant more trees this year.2.Can they plant vegetable in winte将下列句子改为被动语态.1.We must plant more trees this year.2.Can they plant vegetable in winter?3.The bad weather made them give up the playground.
问题描述：
将下列句子改为被动语态.1.We must plant more trees this year.2.Can they plant vegetable in winte
将下列句子改为被动语态.
1.We must plant more trees this year.
2.Can they plant vegetable in winter?
3.The bad weather made them give up the playground.
答