I must have been drinking unawares! 
I must have been drinking without even knowing I was doing so!
I was totally aware that I was not only drinking, but drinking excessively.
But not the turkeyducky soup.
People aren't sinking in that lake because it's shallow.
They've never fixed me up with a man, that's the problem.
the boy is making tea
The Postal Service can make no changes now.
They are unaware of the dangers.