答案：正确的应该是在was后面加not, 即It was not until I came here that I knew the truth.
解析：not...until...直到.才.
翻译：直到我到这儿,我才知道真相.



希望能帮到你,祝更上一层楼O(∩_∩)O
有不明白的请继续追问(*^__^*)