_________ has already been pointed out, grammar is not a set of dead rules.
--- Have you heard that George quit his job? ---Yeah, but I can’t why he did so.
--- Tony, you must have noticed the student who broke the glass. --- I’m sorry.I attentively.
The policeman scolded the driver for turning without a .
I was chatting on the Internet last night when I smelt something in the next room.
---Tom has been fired by his boss. --- ? As far as I know, he is a hardworking and considerate fellow.