Toe the line - accept the authority, principles, or policies of a particular group, especially under pressure.

The correct idiom is "toe the line", not "tow the line": Toe the line: An idiom that means to conform to a rule or standard, or to stand in formation along a line. It can also mean to do what's expected of you, or to align with a starting point or boundary. For example, "The new director will make us toe the line, I'm sure". Tow the line: A common mistake, as "tow" means to drag or pull.

The idiom originated from the idea of standing at the starting line before a race, getting as close as possible without overstepping the mark. The figurative use of the idiom dates from the early 1800s.

Hold the line - love isn't always on time (Toto)

toe the line - accept the authority, principles, or policies of a particular group, especially under pressure.

The correct idiom is "toe the line", not "tow the line": Toe the line: An idiom that means to conform to a rule or standard, or to stand in formation along a line. It can also mean to do what's expected of you, or to align with a starting point or boundary. For example, "The new director will make us toe the line, I'm sure". Tow the line: A common mistake, as "tow" means to drag or pull.

The idiom originated from the idea of standing at the starting line before a race, getting as close as possible without overstepping the mark. The figurative use of the idiom dates from the early 1800s.

Hold the line - love isn't always on time (Toto)