Choose the best words to complete the sentences.

1 _____ you arrive early, you'll get a good seat,(a) Although (b) If (c) However 2 I will not play golf on Saturday ____ the weather gets better,(a) although (b) when (c) unless 3 I enjoy watching table tennis, ____ I don't play it. (a) even if (b) unless (c) until 4 ____ there were many good gymnasts, there weren't many schools for them,(a) Although (b) If (c) When