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After the trip by camel,they plan to travel down the River Nile,where they can go white-water rafting,which will be very dangerous but quite exciting.They will have to prepare a helmet and a life jacket,just 　 　 they fall into the water.  After that,they will go on a trip to Kenya to see wild animals.They’ll try to get very close to the animals to take some really good photographs.Toby needs to buy a large backpack 　 　 to carry the 　 　 of food and water for the two weeks’ walking.  Next,they’ll be moving on to Tanzania to climb Mount Kilimanjaro.It can be 　 　 for them because of the thinner 　 　.　 　,they are going to the Himalayas. 

in case　

in advance　

supplies　

tiring　

atmosphere　

Afterwards