The （able）won't feel that lonely if everyone can do something to help them．
There are about 6，000 languages that are spoken around the world， but 43% of them are dying out． If no is taken， some of these languages will disappear． （act）
Have you ever cut your finger on the edge （边缘）of a book page？ The small cut on your finger is so （pain）．
Scientists around the world are working to a medicine for AIDS（艾滋病）． （ cover）
A team of climbers from Peking University reached the top of the world's mountain，Qomolangma， on May 15， 2018． （high）
In America， 95% of pet owners think of their animals as family ． （member）