YOU SAID:
I don't get what we have to do here
INTO JAPANESE
ここでやらなければならないことがわからない
BACK INTO ENGLISH
I do not know what I have to do here
INTO JAPANESE
私はここで何をしなければならないのかわかりません
BACK INTO ENGLISH
I do not know what I have to do here
You've done this before, haven't you.