委员会已经表态支持我们的改进计划的翻译：Committee have backed our improvement plan 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Committee has expressed support for our improvement plan

Committee have backed our improvement plan

The committee already took a stand supports our improvement plan

The Committee has already expressed to support our improvement plan

Committee have backed our improvement plan