Be successful by being polite. What's the difference between these polite expressions?The English language is peculiar. ... <看更多>

"Was" is the "helper" for the "simple past" passive tense in the third person. Therefore, as the phrase "it was possible" is grammatically ... ... <看更多>

Stumbled across a way to do this in Python here and modified it to work in R. Below is a now-working update of the original code I posted ... ... <看更多>