Superstitions Using First Conditional by Learn English With Beats (YouTube)
If you smash a mirror, you (1)________ have 7 years' bad luck, but you (2)________ have good (3)________ if you carry a lucky rabbit's foot.
If you see a magpie, and it's all on its own, you (4)________ salute the magpie - you will (5)________ bad luck if you don't.
If you knock on wood, it will keep all bad luck away. Your wish will not come true if you reveal it on (6)________ birthday.
If you open an umbrella and you're still inside, bad (7)________ will rain down on you so (8)____________ don't even try.
If you see a magpie, and it's all on its own, you (4)________ salute the magpie - you will (5)________ bad luck if you don't.
If you knock on wood, it will keep all bad luck away. Your wish will not come true if you reveal it on (6)________ birthday.
If you open an umbrella and you're still inside, bad (7)________ will rain down on you so (8)____________ don't even try.
Answers:
(1) will(2) will(3) luck(4) must(5) have(6) your(7) luck(8) please