Помогите правильно закончить предложения. Модуль (Module) 6c № 12. ГДЗ Английский язык Spotlight 10 класс Афанасьева.

Complete the second sentence so that it
means the same as the first. Use two to five
words including the word in bold.
 
1     We won’t get a table if we don’t book early,
unless            We won’t get a table........... early.
2     I think you should order the lamb,
were             If........... order the lamb.
3     The meat was overcooked, so it didn’t taste
very nice.
better         The meat............. if it hadn’t been
overcooked.
4     We didn’t enjoy our dinner because the
restaurant was very busy.
crowded       If the restaurant............. we would
have enjoyed our dinner.