Academic writing helpppp

Hello , can someone please help me rewrite these sentences in more academic way?

I just dont know ...

• Working far into the night in an effort to salvage her little boat.
• Homelessness is a global problem in the whole world.
• The Empty Lands frightened her she didn't want to be alone in such a vast, wild place.
• John’s stylish boots, made of crocodile skin, cost him an arm and a leg.
• About noon the sky darkened, a breeze sprang up, and a low rumble announces the approaching storm.
• Regrettably, the inflation in the third world countries led to increased poverty, illness and so on.
• Some sparks sprayed up and some flew sideways, caught by the wind, and Lina jumped away, but a few sparks landed on her sock, and she stamped her foot frantically, but this only made the sparks burn brighter