Unless/ If

1.      "You won't be able to handle the high-speed thrills of bungee jumping _______ you conquer your fear of heights."

• unless

• if

2.    "_______ you practice precise maneuvers, participating in freestyle skiing can be risky and challenging."

• unless

• if

3. 3. "You will enjoy the thrill of surfing big waves _______ you learn the right techniques and understand ocean currents."

• unless

• if

4.      "_______ you have good stamina and training, participating in an ultra-marathon will be more manageable."

• unless

• if

5.      "_______ you have good stamina and training, participating in an ultra-marathon will be more manageable."

• unless

• if

6.      "_______ you are prepared for extreme weather conditions, participating in ice climbing could become dangerous."

• unless

• if

7.      "Your chances of successfully completing a triathlon are low _______ you train rigorously in swimming, cycling, and running."

• unless

• If

8.   "You will achieve the best results in rock climbing _______ you practice regularly and build your strength."

• unless

• if

9.      "Your chances of mastering white-water rafting improve _______ you take lessons from experienced guides."

• unless

• if

10.      "_______ you wear the proper safety equipment, skydiving will be much safer."

• unless

• if