1 . Today, Mount Qomolangma’s peak is not a lonely place any more. Over 3500 people have    1     (successful) climbed the mountain over the past years. Meanwhile, climbers have complained about    2    (wait) for hours in the bottlenecks.

In fact, the dangerous    3    (crowd) aren't the only problem. All those climbers need     4    (bring) a lot of gear (装置) and much of them ends up being left on the mountains, becoming the world's    5     (tall) rubbish dump.

But the good news is    6     some mountaineers are overtaking it to clean up Qomolangma. Mountaineers Paul and Eberhard are part of Eco Everest Expedition which has been cleaning up rubbish since 2008. So far they    7    (collect)over 13 tons of garbage.

Some of that rubbish is even being used for    8     higher purpose. As part of the Mount Everest 8844 Art Project. a group of 15 artists Nepal collected 1.5 tons of garbage. They’ve changed the cans and oxygen tanks into 74 piece of art that are exhibited    9    Nepal’s capital. Part of the profit from sales    10     (be) available for the Everest Pakeers Association which has helped ole rubbish of the mountain.