1 . first/ she/prize/won/(连词成句)

2 . 专家一贯提倡每一个人都从自身做起去保护环境，使我们的星球成为更宜居的地方。
Expert always ________ that each person should play their part to protect the environment, ________ our planet a better place to live in.

3 . 社交媒体充当了一个高效率传播信息的渠道。
It is social media ________ serve as a very ________ channel for spreading information.

4 . 所有协商必须建立在平等、正直、严肃认真的基础上。
All negotiations must _______ _______ _______ equality, integrity and seriousness.