Camping is an activity in which people live temporarily in the outdoors. Campers (36)_______ in fishing, hunting, swimming, plant study, wildlife watching, ad nature photography. It provides physical benefits when it involves hiking around a campsite, and many people believe that camping (37)_______ youngsters feel more confident. People throughout the world enjoy hiking to wildness campsite. This activity is called backpacking because it involves carrying such essential camping gear as (38)______ tent, food, clothing, and sleeping bag on the back in a bag (39)_________ a backpack. Backpacking is best suited for (40)________ who are in good physical conditions as it may require walking several miles. 36. A. participate B. take parts C. take place D. enter 37. A. enables B. allows C. makes D. causes 38. A. the B. a C. an D. some 39. A. called B. mentioned C. told D. known 40. A. anyone B. everyone C. someone D. those