'For a long time we planned this trip' (zla kolejnosc slow i czas). When 'it's this' (napisalas ..when it is this...- czy to wyglada ok dla Ciebie - zmien) long-awaited day (tu cos brak) we met at my house and drove my car to the lake. Along the way, (kto? co? musisz napisac - bo nie wiemy tego) did some shopping.
'When we had all hit the road.' (to nie jest pelnym zdaniem)
At some point, 'the' (zly przedimek, to byl nieznany pies ) dog ran out onto the road. (kto? co? musisz napisac) braked sharply.
We got out of the car and ran to see what (dodaj tu cos) happened to the dog. He was lying 'on my way' (cos tu nie tak) and was very scared. 'That’s' (zly czas) awfull! ..
We 'took' (mozna tez uzyc 'carried') him to the car and drove him to the vet. When we were already on site (brak przedimka) vet examined 'in detail the dog' (zla kol slow). Fortunately (kto? co? musisz napisac) only had a broken leg.
Unfortunately, it turned out that he was 'homeless' (moze poszukaj inne slowo). 'Really?' (nie rozumiem tego pytania tutaj) ..