1.Ann is very upset because the local authorities have rejected her proposals to install solar panels to supply electricity for traffic lights (down)

Ann is very upset because the local authorities have rturned down her proposals to install solar panels to supply electricity for traffic lights

2 . A committe has been established to examine the question (set)

A committe has been set up to examine the question

3 . "Can I wear jeans at wedding party?" - "Of course not. You'll have to put on smart clothes" (up)

"Can I wear jeans at wedding party?" - "Of course not. You'll have to cover up smart clothes"

4. Before I come to a decision, I'll have to consider their offer very carefully (over)

Before I come to a decision, I'll have to think over their offer very carefully

5. Our class football team lost the match, so we tried to encourage them (up)

Our class football team lost the match, so we tried to spirit them up /cheer them up

1. have rejected → have turned down.

2. has been established → has been set up.

3. put on → cover up

4. consider → think over 

5. encourage → cheer up.

- Answered by Meett1605

Câu 4 mk ko chắc. Sorry.