Choose the suitable conjunctions to complete the sentences.

Choose the correct option.

You won't win the competition [if|unless] you work out a lot.

You won't win the competition [if|unless] you don't prepare for it.

Tim would have bought a smartphone yesterday [if|unless] he had had enough money.

Tim would have bought a smartphone yesterday [if|unless] his mum had prohibited him to spend money.

Your parents would be proud of you [if|unless] you got straight A's.

Your parents would be proud of you [if|unless] you weren't so careless.