Find a mistake and correct it 16.Gold was one of the first to be discovered despite it is one of the rarest metals 17.Polar bears rerely kill people in spite they hunt other animals 18.Even though the extremely bad weather in the mountain, the climbers decided not to cancel their climb 19.Although the harm of smoking, smokers can't get rid it 20.These televisons are all too expensive for we to buy at this time 21.Mi has such many things to do that she has no time to go out 22.My brother is too young not to do volunteer work 23.These televisions were so expensive for we to buy at this time 24.That is such an interested story that everyone would like to read it 25.Hohn had so interesting and creative plans that everyon wanted to work with him 26.The road is very slippery for us to drive fast 27.The woman was so surprised that she couldn't say nothing 28.She had so many luggage that there was not enough room in the car for it 29.He had so a difficult exercise that he couldn't do it