Akkusativ Präpositionen Übung

(1) Er geht düurch das Feuer für mich [/für mich durchs Feuer].
What I'm trying to say: He goes/walks through fire for me.

(2) Ich kann ohne ihn gegen jemand zustehen mit jedem fertigwerden.
What I'm trying to say: I can stand against anyone without him.
["to stand against s.o." is difficult to translate, it can have several meanings, and there's no direct equivalent, so you have to choose a fitting translation depending on the context. I chose "mit jemandem fertigwerden" = no matter what he/she does, I will be able to cope.]

(3) Von 4 Uhr bis 5 Uhr, ["English comma", there's never a comma in that position in German] läuft der Mann den Fluß entlang.
What I'm trying to say: From 4 o'clock to 5 o'clock, the man runs along the river.

(4) Nur einmal um die den Äquator [all Latin words ending in -or are male].
What I'm trying to say: Only one time around the equator.