A) win B) won C) will win D) would win

A) have B) has C) had D) would have

Conditional sentences are used to describe situations that may or may not happen. They typically consist of two clauses: a condition clause (if-clause) and a main clause. The condition clause usually starts with "if" or "unless," and the main clause describes the consequence of the condition.

A) know B) knows C) knew D) would know

A) wasn't B) weren't C) hadn't been D) wouldn't be

A) snows B) will snow C) snow D) would snow