If it rains this weekend, we (NOT BE ABLE) to play the match.
If it rains this weekend, we WON'T BE ABLE to play the match.
If I had any spare time, I (TAKE UP) a sport like hockey.
If I had any spare time, I WOULD TAKE UP a sport like hockey.
If I (BE) taller, I could play basketball for my school team.
If I WAS/WERE taller, I could play basketball for my school team.