Question

4.       his new book,he paid attention to neither people nor things around him. (occupy)

忙于写自己的新书，他没有关注身边的人和事。

Answer 1

4. Occupied in writing/Because he was/had been occupied in writing/Occupying himself in writing 动词occupy是及物动词，因此，要么用被动；要么后带宾语。