“I didn't know that Mary was an adult education student” — does this imply she no longer is one? [duplicate]
Possible Duplicate: He didn’t know where New Jersey was “They knew what mercy is” vs. “they knew what mercy was” Should we use past tense in "Lugo admitted he is the father"? Present or ...
Possible Duplicate: Should I say 'What I wanted to say is' or 'What I wanted to say was'? Which one is correct: Introduce additional user interface widget so that it was ...
They knew what mercy is. They knew what mercy was. Mercy is something that always exists so can I say is as in the above example?
Following Martha's advice I am splitting up a question Compound sentences, the punctuation and mooore. Let's put what I said / wrote something in the past. And now I want to elaborate some key points ...