Today’s double-barreled peeve:
It’s not “making due”, it’s “making do,” as in “I don’t have any heavy cream so I’ll just have to make do with half-and-half.”
And it’s not “tow the line”, it’s “toe the line.” The line in question is not a length of rope that’s being used to pull something along; it’s a line drawn in the sand, or on the sidewalk, or any place else where people are expected to arrange themselves along it in conformation with the wishes of some outside authority. “In this office, you don’t complain if you want to keep your job; you shut up and you toe the line.”
Dr. Doyle's Blog 