B. Read the passage and fill in the gaps with A, B, C, or D.
Crazy Free Time Activities
For most people, having a holiday usually (36) ________ a chance to relax by the pool with a cocktail or wander around town. For others, the real escape only happens when they join in crazy activities! Now let’s look at two of them!
BASE jumping: It is an extremely (37) ________ activity. BASE jumpers jump off tall buildings, bridges, and cliffs. BASE jumpers wear a small parachute and sometimes a wingsuit. They fall very quickly, so it's important to open the parachute very fast. They haven't got much time to use the parachute (38) ________ they hit the ground.
Cave diving: It is a very dangerous underwater activity. People dive into water and (39) ________ through the caves. The caves are very dark and the divers wear a strong light on their heads. Sometimes the light breaks, (40) ________ they carry two extra lights with them.