There is no guarantee that you will get the result you want.

Alternative form of better the devil you know than the devil you don't know

You shall carry the negative consequences of your not having prepared properly.

Alternative form of you pays your money and you takes your choice

Alternative form of you pays your money and you takes your chances

Said to express greater gratitude than would be conveyed by thank you. / Expressing indignation that anyone could doubt the preceding statement.

The expected, polite response to how are you?

(colloquial, set phrase, rhetorical question, often sarcastic) What a surprise; guess what? / Used other than figuratively or idiomatically: see what, do, you, know.

Asks the interlocutor whether or not he or she is able to speak in the English language.

(formal) A greeting used upon being introduced to someone. Alternatives are pleased to meet you and nice to meet you. (Sometimes used as a rhetorical question among familiar parties, depending on the region).