YOU SAID:
Where should we go for lunch?
INTO JAPANESE
ランチはどこに行く?
BACK INTO ENGLISH
Lunch goes anywhere?
INTO JAPANESE
ランチはどこ行く?
BACK INTO ENGLISH
Where do you go for lunch?
INTO JAPANESE
あなたはどこで昼食に行くのですか?
BACK INTO ENGLISH
Where are you going for lunch?
INTO JAPANESE
昼食はどこに行きますか?
BACK INTO ENGLISH
Where are you going for lunch?
That didn't even make that much sense in English.