Please explain these.
1. Brief accompaniment to part of opera. Ans Compact. I’ve done a lot of googling that can’t find anything relating to opera .
2.I should have this for completeness in another case. Ans Dot. No idea.
3. Being unemotional , it’s appropriate to say something offensively sharp. Ans Cold steel. Being unemotional is cold . Cold steel is use the use of something sharp in an offensive situation. Can’t see where steel comes from “ it’s appropriate to say”.