Adjectives + Prepositions 3

Since the takeover, he´s been very busy ___ the new business plan.
I don´t think that´s really pertinent ___ the matter at hand.
He was found guilty ___ embezzlement and went to prison.
We are very aware ___ the challenges of opening new markets.
We are very aware of the challenges inherent ___ the opening of new markets.
There´s no doubt that he´s very efficient ___ what he does.
John is extremely loyal ___ the company.
He has always stayed faithful ___ the company and its ideals.
He´s very popular ___ the team who work under him, which is a big help.
He is largely ignorant ___ GAPP which is holding him back at the company.