Verified answer

The first sentence is almost perfect, the word order of the second one is wrong.

The first sentence should read: .... mit meinem Vater , aber wir ......

(mit meinem, not mit meinen - "mit" requires dative, not accusative).

the first version is almost correct, but for two little things. It should be: Ich verstehe mich gut mit meinem Vater, aber wir streiten uns manchmal.

so, like the other tow pointed out: meineM because of the Dativ case, and there needs to be a comma after "Vater".

NO

the second sentence is a question! "I get on well with my dad but do we argue sometimes?"

The first one is right. just one thing: it's "meinem" because that's Dativ

YES.

The second sentence will do