1) It’s dangerous to go on the waterslide _____ you follow the safe the rules. a) unless b) if c) when d) supposing 2) If you _____ paragliding, you won’t know how much fun it is. a) aren't trying b) don't try c) won't d) try 3) _____ you want to go jet skiing, you must wear a lifejacket. a) Unless b) If  4) You _____ try this sport unless you have a trainer with you. a) shouldn't b) should 5) I will go rafting on Friday _____ I’m not too busy. a) if b) unless

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