Sorry for the late reply, but I will expand on each of the three regions:
1. The Levant had a lot of Greek settlement and Hellenization along the coasts. If the Greeks were eventually able to Hellenize all of Anatolia, I don't see why they couldn't have done the same with the Levant.
2. Egypt had little Greek settlement, except in Alexandria, but a lot of people were bilingual. My guess is that it would be an increasingly bilingual society.
3. Cyrenaica was apparently entirely Hellenized, as its coast where the Greeks settled is the only habitable part of Cyrenaica. The rest is the Libyan desert, the most arid part of the Sahara, which was only fully explored in the early 20th century.