3. ladder:climb
5. I think sad( but no word was bold)
6. I think lighthearted (but no word was bold)
I was just guessing on 5 and 6... but if you tell me what words were bold, I can tell you for sure.
If for number 5, the word was morose, I was right.
If for number 6, the word was jocular, I think I'm right.