Tìm lỗi sai và chữa lại cho đúng
59. However she looks very young, she is twice as old as my-twenty-year old sister.  
60. Despite of his smiling face, the second place contestant is sadder than the winner. 
61. Gold was one of the first to be discovered despite it is one of the rarest metals. 
62. Polar bears rarely kill people in spite they hunt other animals. 
63. Even though the extremely bad weather in the mountain, the climbers decided not to cancel their climb. 
64. Although the harm of smoking, smokers can't get rid it.
Giúp em với ạ, em cần gấp.