题目内容：

Complete the passage below with the correct forms of the given words and phrases in the column (two are extra).

Last summer holiday, Colin and Toby spent a few weeks traveling in Africa. The two British brothers chose Africa as their tourist 1._____ because they considered it to be a place of mystery and2.________. They made sure that they 3.______ everything well before they started their adventure.

Their first extraordinary experience was riding camels through the Sahara Desert. In the desert, they were more than pleased to see the 4._____ stars on clear nights. Then, they traveled down the River Nile and experienced the exciting white-water rafting in the 5.___ water. Afterwards, they went on a trip to see wild animals in Kenya. During the weeks of walking in Kenya, Colin and Toby felt lucky to have prepared a large backpack 6._____ to carry the supplies of water and food. As they were very curious to see the wild animals up close, they brought guns with them7._____ the animals came too close. Then, they moved on to climb Mount Kilimanjaro and enjoyed the splendid scenery there.

8.___, Colin and Toby’s adventure in Africa lasted for about a month. Tired but delighted, they knew that they would bear it in mind forever.