A.
More/less dangerous.
Slimmer.
More/less beautiful.
Cleaner.
More/less difficult.
More/less poisonous.
Longer.
Stronger.
More/less polite.
More/less interesting.
B.
The job was even more difficult than i expected.
That snake is way more poisonous.
That guy is more polite than all of us combined.
That's less interesting when it comes to me.
Lets make this room cleaner than it has ever been.
See, my waist is much slimmer now.
In my opinion she is less beautiful compared to my girlfriend.
This trip took much longer than i expected.
Good job, now he is much more dangerous than he has ever been.
I've gotten much stronger since last time.

PS. Hope i helped ya! Im russian but i live in norway... speak english fluidly!
Don't have a russian keyboard :)