Roz曾是我最亲密的朋友之一，但我们已经疏远了。

Roz used to be one of my closest friends, but we've ___drifted ___apart.

后来在我们的关系中，我们开始疏远，因为作为来自加拿大的学生，我在葡萄牙语上遇到了很多问题，导致我学年末失败。

Later on in our relationship we started to ___drift ___apart because, being a student from Canada, I had a lot of problems with Portuguese which led to my failure at the end of the school year.

多年来，由于不同的生活选择，我和我哥哥已经疏远了。

Over the years, my brother and I have ___drifted ___apart due to our different life choices.