请英语达人帮忙把下列中文翻译成英文！

I don't know Angela has been a teacher for how long, cuz I didn't attend her class till recently.

I don't how many years Angela has been an English teacher, because I just took her class days before.

I don't know how long is Angela being an English teacher,cause I just catch in her class recently[not so long ago].

I don't know how many years did Angela English teacher, because I only recently in her class