You cannot befool your mother by these pretences.

Accusations : a charge or claim that someone has done something illegal or wrong.
Excuses : a reason put forward to conceal the real reason for an action; a pretext.
Statements : a definite or clear expression of something in speech or writing.
Promises : a declaration or assurance that one will do something or that a particular thing will happen.
Pretences : an attempt to make something that is not the case appear true.

Synonym of Pretences is Excuses